623 results on '"Hernigou, A."'
Search Results
2. Mesenchymal Stem Cell Therapy for Bone Repair of Human Hip Osteonecrosis with Bilateral Match-Control Evaluation: Impact of Tissue Source, Cell Count, Disease Stage, and Volume Size on 908 Hips
- Author
-
Philippe Hernigou, Yasuhiro Homma, Jacques Hernigou, Charles Henri Flouzat Lachaniette, Helène Rouard, and Sophie Verrier
- Subjects
hip osteonecrosis ,stem cells ,mesenchymal stem cells ,osteonecrosis repair ,bone marrow autologous concentrate cells ,allogenic expanded stem cells ,Cytology ,QH573-671 - Abstract
We investigated the impact of mesenchymal stem cell (MSC) therapy on treating bilateral human hip osteonecrosis, analyzing 908 cases. This study assesses factors such as tissue source and cell count, comparing core decompression with various cell therapies. This research emphasizes bone repair according to pre-treatment conditions and the specificities of cell therapy in osteonecrosis repair, indicating a potential for improved bone repair strategies in hips without femoral head collapse. This study utilized a single-center retrospective analysis to investigate the efficacy of cellular approaches in the bone repair of osteonecrosis. It examined the impact on bone repair of tissue source (autologous bone marrow concentrate, allogeneic expanded, autologous expanded), cell quantity (from none in core decompression alone to millions in cell therapy), and osteonecrosis stage and volume. Excluding hips with femoral head collapse, it focused on patients who had bilateral hip osteonecrosis, both pre-operative and post-operative MRIs, and a follow-up of over five years. The analysis divided these patients into seven groups based on match control treatment variations in bilateral hip osteonecrosis, primarily investigating the outcomes between core decompression, washing effect, and different tissue sources of MSCs. Younger patients (
- Published
- 2024
- Full Text
- View/download PDF
3. The role of macrophage polarization in tendon healing and therapeutic strategies: Insights from animal models
- Author
-
Yicheng Wang, Xiao Lu, Jianxi Lu, Philippe Hernigou, and Fangchun Jin
- Subjects
macrophage polarization ,tendon healing ,M1 and M2 macrophage ,tissue repair ,inflammatory response ,therapeutic strategies ,Biotechnology ,TP248.13-248.65 - Abstract
Tendon injuries, a common musculoskeletal issue, usually result in adhesions to the surrounding tissue, that will impact functional recovery. Macrophages, particularly through their M1 and M2 polarizations, play a pivotal role in the inflammatory and healing phases of tendon repair. In this review, we explore the role of macrophage polarization in tendon healing, focusing on insights from animal models. The review delves into the complex interplay of macrophages in tendon pathology, detailing how various macrophage phenotypes contribute to both healing and adhesion formation. It also explores the potential of modulating macrophage activity to enhance tendon repair and minimize adhesions. With advancements in understanding macrophage behavior and the development of innovative biomaterials, this review highlights promising therapeutic strategies for tendon injuries.
- Published
- 2024
- Full Text
- View/download PDF
4. Stress shielding at the bone-implant interface: influence of surface roughness and of the bone-implant contact ratio
- Author
-
Raffa, Maria Letizia, Nguyen, Vu-Hieu, Hernigou, Philippe, Lachaniette, Charles-Henri Flouzat, and Haiat, Guillaume
- Subjects
Physics - Medical Physics ,Physics - Classical Physics - Abstract
Short and long-term stabilities of cementless implants are strongly determined by the interfacial load transfer between implants and bone tissue. Stress-shielding effects arise from shear stresses due to the difference of material properties between bone and the implant. It remains difficult to measure the stress field in periprosthetic bone tissue. This study proposes to investigate the dependence of the stress field in periprosthetic bone tissue on i) the implant surface roughness, ii) material properties of bone and of the implant, iii) the bone-implant contact ratio. To do so, a microscale 2-D finite element model of an osseointegrated boneimplant interface was developed where the surface roughness was modeled by a sinusoidal surface. The results show that the isostatic pressure is not affected by the presence of the bone-implant interface while shear stresses arise due to the combined effects of a geometrical singularity (for low surface roughness) and of shear stresses at the bone-implant interface (for high surface roughness). Stress-shielding effects are likely to be more important when the bone-implant contact ratio value is low, which corresponds to a case of relatively low implant stability. Shear stress reach a maximum value at a distance from the interface comprised between 0 and 0.1 time roughness wavelength $\lambda$ and tend to 0 at a distance from the implant surface higher than $\lambda$, independently from bone-implant contact ratio and waviness ratio. A comparison with an analytical model allows validating the numerical results. Future work should use the present approach to model osseointegration phenomena., Comment: Journal of Orthopaedic Research, Wiley, In press
- Published
- 2020
- Full Text
- View/download PDF
5. Satisfactory outcomes of patellar tendon reconstruction using achilles’ tendon allograft with bone block after infected total knee arthroplasty
- Author
-
Kyriakidis, Theofylaktos, Pitsilos, Charalampos, Hernigou, Jacques, Verdonk, René, and Hantes, Michael
- Published
- 2023
- Full Text
- View/download PDF
6. Monitoring cementless femoral stem insertion by impact
- Author
-
Tijou, Antoine, Rosi, Giuseppe, Vayron, Romain, Lomami, Hugues, Hernigou, Philippe, Flouzat-Lachaniette, Charles-Henri, and Haiat, Guillaume
- Subjects
Physics - Medical Physics ,Physics - Classical Physics - Abstract
The primary stability of the femoral stem (FS) implant determines the surgical success of cementless 15 hip arthroplasty. During the insertion, a compromise must be found for the number and energy of 16 impacts that should be sufficiently large to obtain an adapted primary stability of the FS and not too high 17 to decrease fracture risk. The aim of this study is to determine whether a hammer instrumented with a 18 force sensor can be used to monitor the insertion of FS. 19 Cementless FS of different sizes were impacted in four artificial femurs with an instrumented hammer, 20 leading to 72 configurations. The impact number when the surgeon empirically felt that the FS was fully 21 inserted was noted Nsurg. The insertion depth E was assessed using video motion tracking and the impact 22 number Nvid corresponding to the end of the insertion was estimated. For each impact, two indicators 23 noted I and D were determined based on the analysis of the variation of the force as a function of time. 24 The pull-out force F was significantly correlated with the indicator I (R${}^2$ =0.67). The variation of D was 25 analyzed using a threshold to determine an impact number Nd, which is shown to be closely related to 26 Nsurg and Nvid, with an average difference of around 0.2. This approach allows to determine i) the moment 27 when the surgeon should stop the impaction procedure in order to obtain an optimal insertion of the FS 28 and ii) the FS implant primary stability. This study paves the way towards the development of a decision 29 support system to assist the surgeon in hip arthroplasty., Comment: Journal of mechanical behavior of biomedical materials, Elsevier, 2018
- Published
- 2019
7. Survivorship and complications of cementless compared to cemented posterior-stabilized total knee arthroplasties: A systematic review and meta-analysis
- Author
-
Chahidi Esfandiar, Martinov Sagi, Simion Filip, Mercier Camille, Sabot Liam, Kyriakydis Theofylaktos, Callewier Antoine, and Hernigou Jacques
- Subjects
cementless total knee arthroplasty ,posterior stabilized ,survivorship ,Orthopedic surgery ,RD701-811 - Abstract
Purpose: Controversy exists on the best fixation for total knee arthroplasty (TKA). Non-cemented fixation has been theorized to improve patient outcomes and longevity of implantation but no study has focused on comparison between cemented or cementless posterior-stabilized implants despite being the most commonly or second most frequently utilized implant in most total knee replacement registries. Methods: Inclusion criteria with observational and interventional papers, and review articles that focused on patients with cementless and cemented PS TKAs were used to analyze outcomes such as implant survivorship, complication, or revision rates. Using a combination of keywords, a systematic search was performed on Medline (PubMed), Embase, and Cochrane Library for Meta-Analysis. Results: When using the specified criteria, only 8 studies were selected for full-text analysis and meta-analysis after eliminating screening duplicates, titles, and abstracts without full-text access. These eight studies contain 1652 patients, 693 in the non-cemented Group, and 959 in the cemented total knee prosthesis Group. The meta-analysis revealed the advantage of cementless fixation over cemented fixation in implant survivorship, with 0.6% and 2.6% of aseptic loosening in each Group. The cumulative survival at 12 years was 97.4% for the cementless Group and 89.2% for the cemented Group. The subgroup with a stem showed a positive outcome for cementless fixation over cemented fixation regarding implant survivorship. No differences between the cemented and cementless TKAs were observed in patient-reported outcomes, revision rates, or radiolucent line development. Conclusion: We observed comparable rates for cemented and cementless posterior-stabilized TKAs over a medium-term follow-up period.
- Published
- 2024
- Full Text
- View/download PDF
8. Satisfactory outcomes of patellar tendon reconstruction using achilles’ tendon allograft with bone block after infected total knee arthroplasty
- Author
-
Theofylaktos Kyriakidis, Charalampos Pitsilos, Jacques Hernigou, René Verdonk, and Michael Hantes
- Subjects
Orthopedic surgery ,RD701-811 - Abstract
Abstract Purpose Extensor mechanism disruption is an uncommon and devastating complication after total knee arthroplasty. It negatively affects patients’ quality of life and leads to significant functional limitations and the inability to stand and walk. The purpose of the present study was to evaluate the outcomes of the extensor mechanism reconstruction using Achilles’ tendon allograft after infected total knee arthroplasty. It was hypothesized that it is a safe procedure and that patients will present good clinical and functional results. Methods Ten patients treated for infra‐patellar extensor mechanism disruption after infected total knee arthroplasty were prospectively followed for two years. The mean age of patients was 70.8 (range 55–85), with a median BMI of 28.72 ± 2.2 kg/m2. All patients underwent reconstruction using a fresh frozen Achilles tendon allograft. Preoperative and postoperative evaluation included knee‐related clinical and functional assessment based on objective and subjective scores, including the knee flexion, the extension lag, the Knee Society Score (KSS) clinical and functional, and the visual analog scale (VAS) for pain at 12 and 24 months. Radiological evaluation was also performed using the Caton‐Deschamps index. Reported complications were also recorded. Results Clinical and functional outcomes recorded significant improvements (p
- Published
- 2023
- Full Text
- View/download PDF
9. Mesenchymal Stem Cell Therapy for Bone Repair of Human Hip Osteonecrosis with Bilateral Match-Control Evaluation: Impact of Tissue Source, Cell Count, Disease Stage, and Volume Size on 908 Hips.
- Author
-
Hernigou, Philippe, Homma, Yasuhiro, Hernigou, Jacques, Flouzat Lachaniette, Charles Henri, Rouard, Helène, and Verrier, Sophie
- Subjects
- *
MESENCHYMAL stem cells , *ARTIFICIAL hip joints , *STEM cell treatment , *OSTEONECROSIS , *REPAIRING , *BONE cells , *DISEASE progression - Abstract
We investigated the impact of mesenchymal stem cell (MSC) therapy on treating bilateral human hip osteonecrosis, analyzing 908 cases. This study assesses factors such as tissue source and cell count, comparing core decompression with various cell therapies. This research emphasizes bone repair according to pre-treatment conditions and the specificities of cell therapy in osteonecrosis repair, indicating a potential for improved bone repair strategies in hips without femoral head collapse. This study utilized a single-center retrospective analysis to investigate the efficacy of cellular approaches in the bone repair of osteonecrosis. It examined the impact on bone repair of tissue source (autologous bone marrow concentrate, allogeneic expanded, autologous expanded), cell quantity (from none in core decompression alone to millions in cell therapy), and osteonecrosis stage and volume. Excluding hips with femoral head collapse, it focused on patients who had bilateral hip osteonecrosis, both pre-operative and post-operative MRIs, and a follow-up of over five years. The analysis divided these patients into seven groups based on match control treatment variations in bilateral hip osteonecrosis, primarily investigating the outcomes between core decompression, washing effect, and different tissue sources of MSCs. Younger patients (<30 years) demonstrated significantly better repair volumes, particularly in stage II lesions, than older counterparts. Additionally, bone repair volume increased with the number of implanted MSCs up to 1,000,000, beyond which no additional benefits were observed. No significant difference was observed in repair outcomes between different sources of MSCs (BMAC, allogenic, or expanded cells). The study also highlighted that a 'washing effect' was beneficial, particularly for larger-volume osteonecrosis when combined with core decompression. Partial bone repair was the more frequent event observed, while total bone repair of osteonecrosis was rare. The volume and stage of osteonecrosis, alongside the number of injected cells, significantly affected treatment outcomes. In summary, this study provides comprehensive insights into the effectiveness and variables influencing the use of mesenchymal stem cells in treating human hip osteonecrosis. It emphasizes the potential of cell therapy while acknowledging the complexity and variability of results based on factors such as age, cell count, and disease stage. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
10. Shoulder Osteonecrosis: Pathogenesis, Causes, Clinical Evaluation, Imaging, and Classification
- Author
-
Philippe Hernigou, Jacques Hernigou, and Marius Scarlat
- Subjects
Corticosteroids shoulder osteonecrosis ,Dysbarism shoulder osteonecrosis ,Humeral head osteonecrosis ,Posttraumatic humeral head osteonecrosis ,Sickle cell disease shoulder osteonecrosis ,Orthopedic surgery ,RD701-811 - Abstract
The humeral head is the second most common site for nontraumatic osteonecrosis after the femoral head, yet it has attracted relatively little attention. Osteonecrosis is associated with many conditions, such as traumatism, corticosteroid use, sickle cell disease, alcoholism, dysbarism (or caisson disease), and Gaucher's disease. The diagnosis is clinical and radiographic with MRI, with radiographs being the basis for staging. Many theories have been proposed to decipher the mechanism behind the development of osteonecrosis, but none have been proven. Because osteonecrosis may affect patients with a variety of risk factors, it is important that caregivers have a heightened index of suspicion. Early detection may affect prognosis because prognosis is dependent on the stage and location of the disease. In particular, the disease should be suspected in patients with a history of fractures, steroid usage, or sickle cell disease, and in divers. This report reviews osteonecrosis of the humeral head, with an emphasis on causes, clinical evaluation, imaging, and classification.
- Published
- 2020
- Full Text
- View/download PDF
11. Does augmented core decompression decrease the rate of collapse and improve survival of femoral head avascular necrosis? Case-control study comparing 184 augmented core decompressions to 79 standard core decompressions with a minimum 2 years’ follow-up
- Author
-
Martinot, Pierre, Dartus, Julien, Justo, Arthur, Riouach, Hicham, Cremer, Paul, Flouzat-Lachaniette, Charles-Henri, Hernigou, Philippe, Kerboull, Luc, and Chiron, Philippe
- Published
- 2020
- Full Text
- View/download PDF
12. Guidelines for clinical diagnosis and treatment of osteonecrosis of the femoral head in adults (2019 version)
- Author
-
Zhao, Dewei, Zhang, Feng, Wang, Benjie, Liu, Baoyi, Li, Lu, Kim, Shin-Yoon, Goodman, Stuart B., Hernigou, Philippe, Cui, Quanjun, Lineaweaver, William C., Xu, Jiake, Drescher, Wolf R., and Qin, Ling
- Published
- 2020
- Full Text
- View/download PDF
13. The role of macrophage polarization in tendon healing and therapeutic strategies: Insights from animal models
- Author
-
Wang, Yicheng, primary, Lu, Xiao, additional, Lu, Jianxi, additional, Hernigou, Philippe, additional, and Jin, Fangchun, additional
- Published
- 2024
- Full Text
- View/download PDF
14. Orthopedics in Ancient Egypt
- Author
-
Hosny, Gamal Ahmed, primary, Hernigou, Philippe, additional, and Alashhab, Mohamed, additional
- Published
- 2024
- Full Text
- View/download PDF
15. Guidelines for clinical diagnosis and treatment of osteonecrosis of the femoral head in adults (2019 version)
- Author
-
Dewei Zhao, Feng Zhang, Benjie Wang, Baoyi Liu, Lu Li, Shin-Yoon Kim, Stuart B. Goodman, Philippe Hernigou, Quanjun Cui, William C. Lineaweaver, Jiake Xu, Wolf R. Drescher, and Ling Qin
- Subjects
Diseases of the musculoskeletal system ,RC925-935 - Abstract
Osteonecrosis of the femoral head (ONFH) is a common and refractory disease in orthopaedic clinics. The number of patients with ONFH is increasing worldwide every year. There are an estimated 8.12 million patients with nontraumatic osteonecrosis in China alone. Treatment of nontraumatic osteonecrosis has always been a clinical challenge for orthopaedic surgeons. To further standardize diagnosis and treatment of ONFH, these guidelines provide not only basic diagnosis, treatment, and evaluation systems for ONFH but also expert advice and standards in many aspects, including epidemiology, aetiology, diagnostic criteria, pathological staging, prevention and treatment options, and postoperative rehabilitation. The aetiological factors of ONFH can currently be divided into two major categories: traumatic and nontraumatic; however, the specific pathological mechanism of ONFH is not completely clear. Currently, the staging system of ONFH formulated by the Association Research Circulation Osseous is widely used in clinical practice. Based on the changes in the intraosseous blood supply at different stages, the corresponding nonsurgical and surgical treatments are recommended, and when there are risk factors for possible ONFH, certain preventive measures to avoid the occurrence of osteonecrosis are recommended. These guidelines provide brief classification criteria and treatment regimen for osteonecrosis. Specification of the aetiology, treatment plan based on comprehensive consideration of the different stages of osteonecrosis, hip function, age, and occupation of the patients are important steps in diagnosis and developing treatment strategies. Translational potential of this article: New advances in the epidemiology, etiology, pathophysiology, imaging, diagnosis and treatment of ONFH have been renewed in this revision. This guideline can be used for reference by orthopedic professionals and researchers, and for standardized diagnosis and treatment management under the clinical guidance, which is conducive to the prevention, treatment and further research of ONFH, improving the diagnosis and treatment level, making patients' symptoms under good control, and improving their quality of life. Keywords: Diagnosis, Guideline, Osteonecrosis of the femoral head (ONFH), Treatment
- Published
- 2020
- Full Text
- View/download PDF
16. Cumulative radiation dose after lung transplantation in patients with cystic fibrosis
- Author
-
Fitton, I., Revel, M.-P., Burgel, P.-R., Hernigou, A., Boussaud, V., Guillemain, R., Le Pimpec-Barthes, F., Bennani, S., Freche, G., Frija, G., and Chassagnon, G.
- Published
- 2019
- Full Text
- View/download PDF
17. Feasibility and safety of treating non-unions in tibia, femur and humerus with autologous, expanded, bone marrow-derived mesenchymal stromal cells associated with biphasic calcium phosphate biomaterials in a multicentric, non-comparative trial
- Author
-
Gómez-Barrena, Enrique, Rosset, Philippe, Gebhard, Florian, Hernigou, Philippe, Baldini, Nicola, Rouard, Helène, Sensebé, Luc, Gonzalo-Daganzo, Rosa M., Giordano, Rosaria, Padilla-Eguiluz, Norma, García-Rey, Eduardo, Cordero-Ampuero, José, Rubio-Suárez, Juan Carlos, Stanovici, Julien, Ehrnthaller, Christian, Huber-Lang, Markus, Flouzat-Lachaniette, Charles Henri, Chevallier, Nathalie, Donati, Davide Maria, Ciapetti, Gabriela, Fleury, Sandrine, Fernandez, Manuel-Nicolás, Cabrera, José-Rafael, Avendaño-Solá, Cristina, Montemurro, Tiziana, Panaitescu, Carmen, Veronesi, Elena, Rojewski, Markus Thomas, Lotfi, Ramin, Dominici, Massimo, Schrezenmeier, Hubert, and Layrolle, Pierre
- Published
- 2019
- Full Text
- View/download PDF
18. Proximal Tibiofibular Synostosis: Report of 2 Cases and New Surgical Technique
- Author
-
Luisetto, Matteo, primary, Fossati, Alexandre, additional, Hernigou, Jacques, additional, and Deltour, Arnaud, additional
- Published
- 2023
- Full Text
- View/download PDF
19. Les prothèses totales de hanche
- Author
-
Hernigou, Philippe
- Published
- 2018
- Full Text
- View/download PDF
20. Return to sports and quality of life after high tibial osteotomy in patients under 60 years of age
- Author
-
Bastard, C., Mirouse, G., Potage, D., Silbert, H., Roubineau, F., Hernigou, P., and Flouzat-Lachaniette, C.-H.
- Published
- 2017
- Full Text
- View/download PDF
21. Failure of high tibial varus osteotomy for lateral tibio-femoral osteoarthritis with < 10° of valgus: Outcomes in 19 patients
- Author
-
Mirouse, G., Dubory, A., Roubineau, F., Poignard, A., Hernigou, P., Allain, J., and Flouzat Lachaniette, C.H.
- Published
- 2017
- Full Text
- View/download PDF
22. Enhanced human bone marrow mesenchymal stromal cell adhesion on scaffolds promotes cell survival and bone formation
- Author
-
Mebarki, Miryam, Coquelin, Laura, Layrolle, Pierre, Battaglia, Séverine, Tossou, Marine, Hernigou, Philippe, Rouard, Hélène, and Chevallier, Nathalie
- Published
- 2017
- Full Text
- View/download PDF
23. Nonoperative and Operative Bone and Cartilage Regeneration and Orthopaedic Biologics of the Hip: An Orthoregeneration Network (ON) Foundation Hip Review
- Author
-
Peter Verdonk, Jacques Hernigou, Yasuhiro Homma, Philippe Hernigou, René Verdonk, and Stuart B. Goodman
- Subjects
Cartilage, Articular ,Vascular Endothelial Growth Factor A ,medicine.medical_specialty ,Bone Regeneration ,Regenerative medicine ,Pregnancy ,Humans ,Medicine ,Orthopedics and Sports Medicine ,Fibrin glue ,Biological Products ,Hip ,business.industry ,Cartilage ,Regeneration (biology) ,Mesenchymal stem cell ,Surgery ,Orthopedics ,medicine.anatomical_structure ,Denosumab ,Female ,Bone marrow ,Synovial membrane ,business ,Cartilage Diseases ,medicine.drug - Abstract
Orthoregeneration is defined as a solution for orthopaedic conditions that harnesses the benefits of biology to improve healing, reduce pain, improve function, and, optimally, provide an environment for tissue regeneration. Options include drugs, surgical intervention, scaffolds, biologics as a product of cells, and physical and electromagnetic stimuli. The goal of regenerative medicine is to enhance the healing of tissue after musculoskeletal injuries as both isolated treatment and adjunct to surgical management, using novel therapies to improve recovery and outcomes. Various orthopaedic biologics (orthobiologics) have been investigated for the treatment of pathology involving the hip, including osteonecrosis (aseptic necrosis) involving bone marrow, bone, and cartilage, and chondral injuries involving articular cartilage, synovium, and bone marrow. Promising and established treatment modalities for osteonecrosis include nonweightbearing; pharmacological treatments including low molecular-weight heparin, prostacyclin, statins, bisphosphonates, and denosumab, a receptor activator of nuclear factor-kB ligand inhibitor; extracorporeal shock wave therapy; pulsed electromagnetic fields; core decompression surgery; cellular therapies including bone marrow aspirate comprising mesenchymal stromal cells (MSCs aka mesenchymal stem cells) and bone marrow autologous concentrate, with or without expanded or cultured cells, and possible addition of bone morphogenetic protein-2, vascular endothelial growth factor, and basic fibroblast growth factor; and arterial perfusion of MSCs that may be combined with addition of carriers or scaffolds including autologous MSCs cultured with beta-tricalcium phosphate ceramics associated with a free vascularized fibula. Promising and established treatment modalities for chondral lesions include autologous platelet-rich plasma; hyaluronic acid; MSCs (in expanded or nonexpanded form) derived from bone marrow or other sources such as fat, placenta, umbilical cord blood, synovial membrane, and cartilage; microfracture or microfracture augmented with membrane containing MSCs, collagen, HA, or synthetic polymer; mosaicplasty; 1-stage autologous cartilage translation (ACT) or 2-stage ACT using 3-dimensional spheroids; and autologous cartilage grafting; chondral flap repair, or flap fixation with fibrin glue. Hip pain is catastrophic in young patients, and promising therapies offer an alternative to premature arthroplasty. This may address both physical and psychological components of pain; the goal is to avoid or postpone an artificial joint. Level of Evidence Level V, expert opinion.
- Published
- 2022
- Full Text
- View/download PDF
24. Autologous bone marrow stromal cells are promising candidates for cell therapy approaches to treat bone degeneration in sickle cell disease
- Author
-
Lebouvier, Angélique, Poignard, Alexandre, Coquelin-Salsac, Laura, Léotot, Julie, Homma, Yasuhiro, Jullien, Nicolas, Bierling, Philippe, Galactéros, Frédéric, Hernigou, Philippe, Chevallier, Nathalie, and Rouard, Hélène
- Published
- 2015
- Full Text
- View/download PDF
25. Scientists should be awarded: International Orthopaedics publishes the 2021 SICOT Research Awards
- Author
-
Philippe Hernigou, Andreas F. Mavrogenis, and Marius M. Scarlat
- Subjects
Orthopedics and Sports Medicine ,Surgery - Published
- 2022
- Full Text
- View/download PDF
26. A Multicentric, Open-Label, Randomized, Comparative Clinical Trial of Two Different Doses of Expanded hBM-MSCs Plus Biomaterial versus Iliac Crest Autograft, for Bone Healing in Nonunions after Long Bone Fractures: Study Protocol
- Author
-
Enrique Gómez-Barrena, Norma G. Padilla-Eguiluz, Cristina Avendaño-Solá, Concepción Payares-Herrera, Ana Velasco-Iglesias, Ferran Torres, Philippe Rosset, Florian Gebhard, Nicola Baldini, Juan C. Rubio-Suarez, Eduardo García-Rey, José Cordero-Ampuero, Javier Vaquero-Martin, Francisco Chana, Fernando Marco, Javier García-Coiradas, Pedro Caba-Dessoux, Pablo de la Cuadra, Philippe Hernigou, Charles-Henri Flouzat-Lachaniette, François Gouin, Didier Mainard, Jean Michel Laffosse, Miriam Kalbitz, Ingo Marzi, Norbert Südkamp, Ulrich Stöckle, Gabriela Ciapetti, Davide Maria Donati, Luigi Zagra, Ugo Pazzaglia, Guido Zarattini, Rodolfo Capanna, and Fabio Catani
- Subjects
Internal medicine ,RC31-1245 - Abstract
ORTHOUNION is a multicentre, open, comparative, three-arm, randomized clinical trial (EudraCT number 2015-000431-32) to compare the efficacy, at one and two years, of autologous human bone marrow-derived expanded mesenchymal stromal cell (hBM-MSC) treatments versus iliac crest autograft (ICA) to enhance bone healing in patients with diaphyseal and/or metaphysodiaphyseal fracture (femur, tibia, and humerus) status of atrophic or oligotrophic nonunion (more than 9 months after the acute fracture, including recalcitrant cases after failed treatments). The primary objective is to determine if the treatment with hBM-MSCs combined with biomaterial is superior to ICA in obtaining bone healing. If confirmed, a secondary objective is set to determine if the dose of 100 × 106 hBM-MSCs is noninferior to that of 200 × 106 hBM-MSCs. The participants (n=108) will be randomly assigned to either the experimental low dose (n=36), the experimental high dose (n=36), or the comparator arm (n=36) using a central randomization service. The trial will be conducted in 20 clinical centres in Spain, France, Germany, and Italy under the same clinical protocol. The confirmation of superiority for the proposed ATMP in nonunions may foster the future of bone regenerative medicine in this indication. On the contrary, absence of superiority may underline its limitations in clinical use.
- Published
- 2018
- Full Text
- View/download PDF
27. Autologous bone marrow stromal cells are promising candidates for cell therapy approaches to treat bone degeneration in sickle cell disease
- Author
-
Angélique Lebouvier, Alexandre Poignard, Laura Coquelin-Salsac, Julie Léotot, Yasuhiro Homma, Nicolas Jullien, Philippe Bierling, Frédéric Galactéros, Philippe Hernigou, Nathalie Chevallier, and Hélène Rouard
- Subjects
Bone marrow stromal cells ,Sickle cell disease ,Osteonecrosis ,Bone regeneration ,Biology (General) ,QH301-705.5 - Abstract
Osteonecrosis of the femoral head is a frequent complication in adult patients with sickle cell disease (SCD). To delay hip arthroplasty, core decompression combined with concentrated total bone marrow (BM) treatment is currently performed in the early stages of the osteonecrosis. Cell therapy efficacy depends on the quantity of implanted BM stromal cells. For this reason, expanded bone marrow stromal cells (BMSCs, also known as bone marrow derived mesenchymal stem cells) can be used to improve osteonecrosis treatment in SCD patients. In this study, we quantitatively and qualitatively evaluated the function of BMSCs isolated from a large number of SCD patients with osteonecrosis (SCD-ON) compared with control groups (patients with osteonecrosis not related to SCD (ON) and normal donors (N)). BM total nuclear cells and colony-forming efficiency values (CFE) were significantly higher in SCD-ON patients than in age and sex-matched controls. The BMSCs from SCD-ON patients were similar to BMSCs from the control groups in terms of their phenotypic and functional properties. SCD-ON patients have a higher frequency of BMSCs that retain their bone regeneration potential. Our findings suggest that BMSCs isolated from SCD-ON patients can be used clinically in cell therapy approaches. This work provides important preclinical data that is necessary for the clinical application of expanded BMSCs in advanced therapies and medical products.
- Published
- 2015
- Full Text
- View/download PDF
28. Radiological evaluation of response to treatment: Application to metastatic renal cancers receiving anti-angiogenic treatment
- Author
-
Ammari, S., Thiam, R., Cuenod, C.A., Oudard, S., Hernigou, A., Grataloup, C., Siauve, N., Medioni, J., and Fournier, L.S.
- Published
- 2014
- Full Text
- View/download PDF
29. Thoracic computerised tomography scans in one hundred eighteen orthopaedic patients during the COVID-19 pandemic: identification of chest lesions; added values; help in managing patients; burden on the computerised tomography scan department
- Author
-
Jean Mani, Patrick Younes, Jacques Hernigou, Philippe Hernigou, François Cornil, Alexandre Poignard, Said El Bouchaibi, and Jean François Naouri
- Subjects
Adult ,Male ,Thorax ,Chest CT scan ,medicine.medical_specialty ,Adolescent ,Pneumonia, Viral ,Prevalence ,Orthopaedic patients and COVID-19 ,Thoracic CT scan ,Betacoronavirus ,Young Adult ,03 medical and health sciences ,0302 clinical medicine ,Pandemic COVID-19 ,Humans ,Medicine ,Orthopedics and Sports Medicine ,Pandemics ,Pelvis ,Aged ,Aged, 80 and over ,030203 arthritis & rheumatology ,Original Paper ,030222 orthopedics ,SARS-CoV-2 ,business.industry ,Gold standard ,COVID-19 ,Emergency department ,Middle Aged ,Trauma patients and COVID-19 ,PCR test ,Coronavirus ,Orthopedics ,medicine.anatomical_structure ,Orthopedic surgery ,Abdomen ,Female ,Radiography, Thoracic ,Surgery ,Tomography ,Radiology ,Coronavirus Infections ,Tomography, X-Ray Computed ,business - Abstract
Purpose Based on the recent literature, chest computed tomography (CT) examination could aid for management of patients during COVID-19 pandemic. However, the role of chest CT in management of COVID-19 patients is not exactly the same for medical or surgical specialties. In orthopaedic or trauma emergency, abdomen, pelvis, cervical, dorsal, and lumbar spine CT are performed to investigate patients; the result is a thoracic CT scan incorporating usually the thorax; however, information about lung parenchyma can be obtained on this thorax CT, and manifestations of COVID-19 can be diagnosed. The objective of our study was to evaluate this role in orthopedic patients to familiarize orthopaedists with the value and limits of thoracic CT in orthopaedic surgery. Materials and methods Among the 1397 chest CT scans performed during the pandemic period from 1 March 2020 to 10 May 2020, in two centres with orthopaedic surgery, we selected all the 118 thoracic or chest CT performed for patients who presented to the Emergency Department of the hospital with a diagnosis of trauma for orthopaedic surgical treatment. Thirty-nine of these 118 patients were tested with PCR for the diagnosis of COVID-19 infection. Depending on clinical status (symptomatic or non-symptomatic), the information useful for the orthopaedist surgeon and obtained from the Chest CT scan according to the result of the PCR (gold standard) was graded from 0 (no or low value) to 3 (high value). The potential risks of chest CT as exposure to radiation, and specific pathway were analyzed and discussed. A group of patients treated during a previous similar period (1 March 2018 to 15 April 2018) was used as control for evaluation of the increase of CT scanning during the COVID-19 pandemic. Results Among the 118 patients with chest CT, there were 16 patients with positive COVID-19 chest CT findings, and 102 patients with negative chest CT scan. With PCR results as reference, the sensitivity, specificity, positive predictive value of chest CT in indicating COVID-19 infection were 81%, 93%, and 86%, respectively (p = 0.001). A useful information for the orthopaedic surgeon (graded as 1 for 71 cases, as 2 for 5 cases, and as 3 for 11 cases) was obtained from 118 chest CT scans for 87 (74%) patients, while the CT was no value in 30 (25%) cases, and negative value in one (1%) case. Roughly 20% of the total number of CT scanner performed over the pandemic period was dedicated to COVID-19, but only 2% were for orthopaedic or trauma patients. However, this was ten times higher than during the previous control period of comparison. Conclusion Although extremely valuable for surgery management, these results should not be overstated. The CT findings studied are not specific for COVID-19, and the positive predictive value of CT will be low unless disease prevalence is high, which was the case during this period.
- Published
- 2020
- Full Text
- View/download PDF
30. Early efficacy evaluation of mesenchymal stromal cells (MSC) combined to biomaterials to treat long bone non-unions
- Author
-
Pierre Layrolle, Sandrine Fleury, Massimo Dominici, M.N. Fernández, Norma G. Padilla-Eguiluz, Gabriela Ciapetti, Hélène Rouard, Luc Sensebé, Eduardo García-Rey, Hubert Schrezenmeier, Julien Stanovici, Markus Rojewski, Cristina Avendaño-Solá, José Cordero-Ampuero, Elena Veronesi, Christian Ehrnthaller, Tiziana Montemurro, Nicola Baldini, Rosaria Giordano, Charles Henri Flouzat-Lachaniette, Ramin Lotfi, Markus Huber-Lang, Davide Maria Donati, Benedetta Spazzoli, Philippe Hernigou, Nathalie Chevallier, Enrique Gómez-Barrena, Philippe Rosset, Jose Rafael Cabrera, Carmen Panaitescu, Florian Gebhard, Juan Carlos Rubio-Suárez, Marta Dominguez García-Simón, Rosa Gonzalo-Daganzo, UAM. Departamento de Cirugía, UAM. Departamento de Farmacología, UAM. Departamento de Medicina, Instituto de Investigación Sanitaria Hospital Universitario de La Paz (IdiPAZ), Gomez-Barrena E., Padilla-Eguiluz N., Rosset P., Gebhard F., Hernigou P., Baldini N., Rouard H., Sensebe L., Gonzalo-Daganzo R.-M., Giordano R., Garcia-Rey E., Cordero-Ampuero J., Rubio-Suarez J.C., Garcia-Simon M.D., Stanovici J., Ehrnthaller C., Huber-Lang M., Flouzat-Lachaniette C.H., Chevallier N., Donati D.M., Spazzoli B., Ciapetti G., Fleury S., Fernandez M.-N., Cabrera J.-R., Avendano-Sola C., Montemurro T., Panaitescu C., Veronesi E., Rojewski M.T., Lotfi R., Dominici M., Schrezenmeier H., and Layrolle P.
- Subjects
Male ,Clinical consolidation ,Long bone ,Biocompatible Materials ,Fractures, Bone ,0302 clinical medicine ,Osteogenesis ,Medicine ,Femur ,General Environmental Science ,Fracture Healing ,2. Zero hunger ,030222 orthopedics ,Consolidation (soil) ,Middle Aged ,3. Good health ,Europe ,Treatment Outcome ,medicine.anatomical_structure ,Radiological weapon ,Female ,Adult ,medicine.medical_specialty ,Bioceramic ,Efficacy ,Medicina ,Subgroup analysis ,Bone healing ,Mesenchymal Stem Cell Transplantation ,Transplantation, Autologous ,Non-union ,MSC ,Radiological consolidation ,03 medical and health sciences ,Humans ,Bioceramics ,Clinical Consolidation ,Long Bone ,Radiological Consolidation ,Treatment ,Tibia ,business.industry ,Mesenchymal Stem Cells ,030208 emergency & critical care medicine ,Humerus ,Confidence interval ,Surgery ,Radiography ,Clinical trial ,Fractures, Ununited ,General Earth and Planetary Sciences ,business ,Body mass index - Abstract
Artículo con numerosos autores, sólo se recogen el primero y los pertenecientes a la UAM, Background and study aim: Advanced therapy medicinal products (ATMP) frequently lack of clinical data on efficacy to substantiate a future clinical use. This study aims to evaluate the efficacy to heal long bone delayed unions and non-unions, as secondary objective of the EudraCT 2011-005441-13 clinical trial, through clinical and radiological bone consolidation at 3, 6 and 12 months of follow-up, with subgroup analysis of affected bone, gender, tobacco use, and time since the original fracture. Patients and methods: Twenty-eight patients were recruited and surgically treated with autologous bone marrow derived mesenchymal stromal cells expanded under Good Manufacturing Practices, combined to bioceramics in the surgical room before implantation. Mean age was 39 ±13 years, 57% were males, and mean Body Mass Index 27 ±7. Thirteen (46%) were active smokers. There were 11 femoral, 4 humeral, and 13 tibial non-unions. Initial fracture occurred at a mean ±SD of 27.9 ±31.2 months before recruit- ment. Efficacy results were expressed by clinical consolidation (no or mild pain if values under 30 in VAS scale), and by radiological consolidation with a REBORNE score over 11/16 points (value of or above 0.6875). Means were statistically compared and mixed models for repeated measurements estimated the mean and confidence intervals (95%) of the REBORNE Bone Healing scale. Clinical and radiological con- solidation were analyzed in the subgroups with Spearman correlation tests (adjusted by Bonferroni). Results: Clinical consolidation was earlier confirmed, while radiological consolidation at 3 months was 25.0% (7/28 cases), at 6 months 67.8% (19/28 cases), and at 12 months, 92.8% (26/28 cases including the drop-out extrapolation of two failures). Bone biopsies confirmed bone formation surrounding the bioce- ramic granules. All locations showed similar consolidation, although this was delayed in tibial non-unions. No significant gender difference was found in 12-month consolidation (95% confidence). Higher consoli- dation scale values were seen in non-smoking patients at 6 ( p = 0.012, t -test) and 12 months ( p = 0.011, t -test). Longer time elapsed after the initial fracture did not preclude the occurrence of consolidation. Conclusion: Bone consolidation was efficaciously obtained with the studied expanded hBM-MSCs com- bined to biomaterials, by clinical and radiological evaluation, and confirmed by bone biopsies, with lower consolidation scores in smokers, This research received funding from the European Union’s Sev- enth Framework Programme ( FP7/FP7-HEALTH-2009 ) with the RE- BORNE Project (under G.A. 241876), and the European Union’s Horizon 2020 Programme ( H2020-SC1 2016-2017 ), with the OR- THOUNION Project (under G.A. 7333288)
- Published
- 2020
- Full Text
- View/download PDF
31. Role of matrix‐associated autologous chondrocyte implantation with spheroids in the treatment of large chondral defects in the knee: A systematic review
- Author
-
Zorgeenheid Orthopaedie Medisch, Regenerative Medicine and Stem Cells, Orthopaedie Onderzoek, Vonk, Lucienne Angela, Roël, Giulietta, Hernigou, Jacques, Kaps, Christian, Hernigou, Philippe, Zorgeenheid Orthopaedie Medisch, Regenerative Medicine and Stem Cells, Orthopaedie Onderzoek, Vonk, Lucienne Angela, Roël, Giulietta, Hernigou, Jacques, Kaps, Christian, and Hernigou, Philippe
- Published
- 2021
32. Role of scaffolds, subchondral, intra-articular injections of fresh autologous bone marrow concentrate regenerative cells in treating human knee cartilage lesions: Different approaches and different results
- Author
-
Hernigou, Jacques, Vertongen, Pascale, Rasschaert, Joanne, Hernigou, Philippe, Hernigou, Jacques, Vertongen, Pascale, Rasschaert, Joanne, and Hernigou, Philippe
- Abstract
The value of bone marrow aspirate concentrates for treatment of human knee cartilage lesions is unclear. Most of the studies were performed with intra-articular injections. However, subchondral bone plays an important role in the progression of osteoarthritis. We investigated by a literature review whether joint, subchondral bone, or/and scaffolds implantation of fresh autologous bone marrow aspirate concentrated (BMAC) containing mesenchymal stem cells (MSCs) would improve osteoarthritis (OA). There is in vivo evidence that suggests that all these different approaches (intra-articular injections, subchondral implantation, scaffolds loaded with BMAC) can improve the patient. This review analyzes the evidence for each different approach to treat OA. We found that the use of intra-articular injections resulted in a significant relief of pain symptoms in the short term and was maintained in 12 months. However, the clinical trials indicate that the application of autologous bone marrow concentrates in combination with scaffolds or in injection in the subchondral bone was superior to intra-articular injection for long-term results. The tendency of MSCs to differentiate into fibrocartilage affecting the outcome was a common issue faced by all the studies when biopsies were performed, except for scaffolds implantation in which some hyaline cartilage was found. The review suggests also that both implantation of subchondral BMAC and scaffolds loaded with BMAC could reduce the need for further surgery., SCOPUS: re.j, info:eu-repo/semantics/published
- Published
- 2021
33. Ankle and foot surgery: from arthrodesis to arthroplasty, three dimensional printing, sensors, artificial intelligence, machine learning technology, digital twins, and cell therapy
- Author
-
Philippe Hernigou and Marius M. Scarlat
- Subjects
medicine.medical_specialty ,medicine.medical_treatment ,Arthrodesis ,MEDLINE ,Cell- and Tissue-Based Therapy ,Arthroplasty ,Machine Learning ,Arthroplasty, Replacement, Ankle ,Physical medicine and rehabilitation ,Artificial Intelligence ,medicine ,Orthopedics and Sports Medicine ,Digital Technology ,business.industry ,medicine.anatomical_structure ,Editorial ,Three dimensional printing ,Orthopedic surgery ,Printing, Three-Dimensional ,Surgery ,Ankle ,Foot surgery ,business ,Ankle Joint - Published
- 2021
- Full Text
- View/download PDF
34. Dual-mobility or Constrained Liners Are More Effective Than Preoperative Bariatric Surgery in Prevention of THA Dislocation
- Author
-
Hernigou, Philippe, Trousselier, Matthieu, Roubineau, François, Bouthors, Charlie, and Flouzat Lachaniette, Charles Henri
- Published
- 2016
- Full Text
- View/download PDF
35. Anatomy of the ilium for bone marrow aspiration: map of sectors and implication for safe trocar placement
- Author
-
Hernigou, Jacques, Alves, Alexandra, Homma, Yashiuro, Guissou, Isaac, and Hernigou, Philippe
- Published
- 2014
- Full Text
- View/download PDF
36. Understanding bone safety zones during bone marrow aspiration from the iliac crest: the sector rule
- Author
-
Hernigou, Jacques, Picard, Laure, Alves, Alexandra, Silvera, Jonathan, Homma, Yasuhiro, and Hernigou, Philippe
- Published
- 2014
- Full Text
- View/download PDF
37. Visual lung damage CT score at hospital admission of COVID-19 patients and 30-day mortality
- Author
-
Kim Diep Dang Tran, Antoine Fayol, A. Hernigou, Teodor Grand, Jad Al Haddad, Guillaume Reverdito, Gilles Soulat, Olivier Clément, Jean-Sébastien Hulot, Anne Charpentier, Elie Mousseaux, Marine Livrozet, Etienne Charpentier, Hôpital Européen Georges Pompidou [APHP] (HEGP), Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Hôpitaux Universitaires Paris Ouest - Hôpitaux Universitaires Île de France Ouest (HUPO), Université Paris Descartes - Paris 5 (UPD5), Paris-Centre de Recherche Cardiovasculaire (PARCC (UMR_S 970/ U970)), Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Hôpitaux Universitaires Paris Ouest - Hôpitaux Universitaires Île de France Ouest (HUPO)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Hôpitaux Universitaires Paris Ouest - Hôpitaux Universitaires Île de France Ouest (HUPO)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Paris Cité (UPCité), CIC - HEGP (CIC 1418), Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Hôpital Européen Georges Pompidou [APHP] (HEGP), Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Hôpitaux Universitaires Paris Ouest - Hôpitaux Universitaires Île de France Ouest (HUPO)-Hôpitaux Universitaires Paris Ouest - Hôpitaux Universitaires Île de France Ouest (HUPO)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Paris Cité (UPCité), CArdiovasculaire Rénal Transplantation nEurovasculaire [Paris] (DMU CARTE), Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Hôpitaux Universitaires Paris Ouest - Hôpitaux Universitaires Île de France Ouest (HUPO)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Hôpitaux Universitaires Paris Ouest - Hôpitaux Universitaires Île de France Ouest (HUPO), and HULOT, Jean-Sébastien
- Subjects
medicine.medical_specialty ,Respiratory rate ,Coronavirus disease 2019 (COVID-19) ,[SDV]Life Sciences [q-bio] ,Tomography, x-ray computed ,030218 nuclear medicine & medical imaging ,03 medical and health sciences ,Computed Tomography ,0302 clinical medicine ,medicine ,Humans ,Radiology, Nuclear Medicine and imaging ,Prospective Studies ,Respiratory system ,Prospective cohort study ,Lung ,Tomography ,Neuroradiology ,x-ray computed ,medicine.diagnostic_test ,SARS-CoV-2 ,business.industry ,COVID-19 ,Interventional radiology ,Pneumonia ,General Medicine ,medicine.disease ,Hospitals ,[SDV] Life Sciences [q-bio] ,medicine.anatomical_structure ,Severe acute respiratory syndrome ,030220 oncology & carcinogenesis ,Radiology ,business - Abstract
Objectives Chest CT has been widely used to screen and to evaluate the severity of COVID-19 disease in the early stages of infection without severe acute respiratory syndrome, but no prospective data are available to study the relationship between extent of lung damage and short-term mortality. The objective was to evaluate association between standardized simple visual lung damage CT score (vldCTs) at admission, which does not require any software, and 30-day mortality. Methods In a single-center prospective cohort of COVID-19 patients included during 4 weeks, the presence and extent of ground glass opacities(GGO), consolidation opacities, or both of them were visually assessed in each of the 5 lung lobes (score from 0 to 4 per lobe depending on the percentage and out of 20 per patient = vldCTs) after the first chest CT performed to detect COVID-19 pneumonia. Results Among 210 confirmed COVID-19 patients, the number of survivors and non-survivors was 162 (77%) and 48 (23%), respectively at 30 days. vldCTs was significantly higher in non-survivors, and the AUC of vldCTs to distinguish survivors and non-survivors was 0.72 (95%CI 0.628–0.807, p < 0.001); the best cut-off vldCTs value was 7. During follow-up, significant differences in discharges and 30-day mortality were observed between patients with vldCTs ≥ 7 versus vldCTs < 7: (98 [85.2%] vs 49 [51.6%]; p < 0.001 and 36 [37.9%] vs 12 [12.4%]; p < 0.001, respectively. The 30-day mortality increased if vldCTs ≥ 7 (HR, 3.16 (1.50–6.43); p = 0.001), independent of age, respiratory rate and oxygen saturation levels, and comorbidities at admission. Conclusions By using chest CT in COVID-19 patients, extensive lung damage can be visually assessed with a score related to 30-day mortality independent of conventional risk factors of the disease. Key Points • In non-selected COVID-19 patients included prospectively during 4 weeks, the extent of ground glass opacities(GGO) and consolidation opacities evaluated by a simple visual score was related to 30-day mortality independent of age, respiratory rate, oxygen saturation levels, comorbidities, and hs-troponin I level at admission. • This severity score should be incorporated into risk stratification algorithms and in structured chest CT reports requiring a standardized reading by radiologists in case of COVID-19. Supplementary Information The online version contains supplementary material available at 10.1007/s00330-021-07938-2.
- Published
- 2021
- Full Text
- View/download PDF
38. Post-COVID-19 return to elective orthopaedic surgery—is rescheduling just a reboot process? Which timing for tests? Is chest CT scan still useful? Safety of the first hundred elective cases? How to explain the “new normality health organization” to patients?
- Author
-
Hernigou, Jacques, Valcarenghi, Jerome, Safar, Adonis, Ferchichi, Mohamed Amine, Chahidi, Esfandiar, Jennart, Harold, Hernigou, Philippe, Hernigou, Jacques, Valcarenghi, Jerome, Safar, Adonis, Ferchichi, Mohamed Amine, Chahidi, Esfandiar, Jennart, Harold, and Hernigou, Philippe
- Abstract
PurposeThe long incubation period and asymptomatic spread of COVID-19 present considerable challenges for health care institutions when patients return to elective surgery.MethodsA retrospective review of the first adult elective cases performed between May 18, 2020 and June 14, 2020, after the end of lockdown was analysed in Belgium to answer the following questions: (1) for the 236 cancelled patients during the outbreak, how easy was rescheduling? (2) How useful was universal RT-PCR testing and chest CT scan for the 211 orthopaedic and trauma admissions? (3) How were surgical difficulty category, number of operations and complications different when compared to the pre-COVID period? (4) How would patients balance the benefit of surgery against the unknown risk of developing COVID-19?ResultsBefore surgery, blood tests for anaesthesiology and imaging related to the surgical procedure were scheduled prior to universal testing (COVID-19 PCR and chest CT) performed 72–120 hours before surgery. Among the 211 asymptomatic patients who were tested before surgery, six had positive PCR, while no abnormality was found on the chest CT scan of all the patients. With this timing for tests, the 104 patients included in the current study for elective surgery were free of disease before undergoing surgery and remained without COVID-19 after surgery. Among the 366 cancelled patients during the outbreak, only 12% of the patients accepted to proceed with rescheduling immediately. Therefore, this resulted in a 70% reduction for elective surgery and in a 50% reduction for arthroplasties as compared to pre-COVID period. The rate of complications was not increased during the post-COVID period. A portion of patients have confused idea of screening and have difficulty to perceive the new rules of health organization.ConclusionsResumption of elective surgical procedures appears more difficult for patients than for surgeons with a low percentage of cancelled patients accepting to res, info:eu-repo/semantics/published
- Published
- 2020
39. Platelet lysate coating on scaffolds directly and indirectly enhances cell migration, improving bone and blood vessel formation
- Author
-
Leotot, Julie, Coquelin, Laura, Bodivit, Gwellaouen, Bierling, Philippe, Hernigou, Philippe, Rouard, Helene, and Chevallier, Nathalie
- Published
- 2013
- Full Text
- View/download PDF
40. Ceramic-on-ceramic THA Associated With Fewer Dislocations and Less Muscle Degeneration by Preserving Muscle Progenitors
- Author
-
Hernigou, Philippe, Roussignol, Xavier, Delambre, Jerome, Poignard, Alexandre, and Flouzat-Lachaniette, Charles-Henri
- Published
- 2015
- Full Text
- View/download PDF
41. Diagnostic accuracy of magnetic resonance imaging for an acute pulmonary embolism: results of the ‘IRM‐EP’ study
- Author
-
REVEL, M.P., SANCHEZ, O., COUCHON, S., PLANQUETTE, B., HERNIGOU, A., NIARRA, R., MEYER, G., and CHATELLIER, G.
- Published
- 2012
- Full Text
- View/download PDF
42. Posterior tibial slope changes after opening- and closing-wedge high tibial osteotomy: A comparative prospective multicenter study
- Author
-
Ducat, A., Sariali, E., Lebel, B., Mertl, P., Hernigou, P., Flecher, X., Zayni, R., Bonnin, M., Jalil, R., Amzallag, J., Rosset, P., Servien, E., Gaudot, F., Judet, T., and Catonné, Y.
- Published
- 2012
- Full Text
- View/download PDF
43. Ceramic-on-ceramic Bearing Decreases the Cumulative Long-term Risk of Dislocation
- Author
-
Hernigou, Philippe, Homma, Yasuhiro, Pidet, Olivier, Guissou, Isaac, and Hernigou, Jacques
- Published
- 2013
- Full Text
- View/download PDF
44. Assessing the Acetabular Cup Implant Primary Stability by Impact Analyses: A Cadaveric Study.
- Author
-
Adrien Michel, Romain Bosc, Jean-Paul Meningaud, Philippe Hernigou, and Guillaume Haiat
- Subjects
Medicine ,Science - Abstract
BACKGROUND:The primary stability of the acetabular cup (AC) implant is an important determinant for the long term success of cementless hip surgery. However, it remains difficult to assess the AC implant stability due to the complex nature of the bone-implant interface. A compromise should be found when inserting the AC implant in order to obtain a sufficient implant stability without risking bone fracture. The aim of this study is to evaluate the potential of impact signals analyses to assess the primary stability of AC implants inserted in cadaveric specimens. METHODS:AC implants with various sizes were inserted in 12 cadaveric hips following the same protocol as the one employed in the clinic, leading to 86 different configurations. A hammer instrumented with a piezoelectric force sensor was then used to measure the variation of the force as a function of time produced during the impact between the hammer and the ancillary. Then, an indicator I was determined for each impact based on the impact momentum. For each configuration, twelve impacts were realized with the hammer, the value of the maximum amplitude being comprised between 2500 and 4500 N, which allows to determine an averaged value IM of the indicator for each configuration. The pull-out force F was measured using a tangential pull-out biomechanical test. RESULTS:A significant correlation (R2 = 0.69) was found between IM and F when pooling all data, which indicates that information related to the AC implant biomechanical stability can be retrieved from the analysis of impact signals obtained in cadavers. CONCLUSION:These results open new paths in the development of a medical device that could be used in the future in the operative room to help orthopedic surgeons adapt the surgical protocol in a patient specific manner.
- Published
- 2016
- Full Text
- View/download PDF
45. Bone marrow in orthopaedics (part II): a three hundred and seventy million-year saga from the Devonian to the coronavirus disease 2019 pandemic—osteonecrosis; transplantation; 'human chimera'; stem cells, bioreactors, and coronavirus disease
- Author
-
Hernigou, Philippe
- Subjects
medicine.medical_specialty ,Pediatrics ,Stem cells ,Disease ,03 medical and health sciences ,Bioreactors ,0302 clinical medicine ,Bone Marrow ,Internal medicine ,Pandemic ,medicine ,Animals ,Humans ,Bone marrow history ,Tissue engineering ,Orthopedics and Sports Medicine ,Marrow transplantation ,Pandemics ,Orthopaedic Heritage ,030203 arthritis & rheumatology ,Transplantation Chimera ,030222 orthopedics ,Hematology ,SARS-CoV-2 ,business.industry ,Mesenchymal stem cell ,Osteonecrosis ,COVID-19 ,Transplantation ,Orthopedics ,medicine.anatomical_structure ,Orthopedic surgery ,Surgery ,Bone marrow ,Stem cell ,business - Abstract
Purpose Three hundred seventy million years ago, bone marrow appeared in skeleton of a fish. More than one hundred years ago, the concept of bone marrow transplantation was proposed to treat human diseases. During the last five decades, this concept became a reality first in hematology and later for orthopaedic diseases. Material and methods These advances were possible due to the comprehension of the three major components of bone marrow: the fat part, the haematologic part, and the stroma part. Each part has a different history, but the three parts are linked in physiology as in history. Results During many centuries, bone marrow was considered just as food; however, one hundred years ago, the concept of bone marrow transplantation to treat humans was proposed by the French physician Brown-Séquard. During the last five decades, this concept became a reality first in haematology and later for orthopaedic diseases. Transferring what was known from experimental animal models to humans was met with many challenges, the atomic bomb research, and many deaths. Yet through the recognition and subsequent understanding of fundamental processes, medical resiliency, and the determination of a few pioneers, local bone marrow transplantation in orthopaedic surgery became a therapeutic option first for a limited number of diseases and patients. Over the last two decades, mesenchymal stromal cells (MSCs) have been the focus of intense research by acadaemia and industry due to their unique features. MSCs can be easily isolated and expanded through in vitro culture by taking full advantage of their self-renewing capacity. In addition, MSCs exert immunomodulatory effects and can be differentiated into various lineages, which makes them highly attractive for clinical applications in cell-based therapies. Conclusion In this review, we attempted to provide a historical overview of bone marrow history, MSC discovery, characterization, and the first clinical studies conducted.
- Published
- 2020
- Full Text
- View/download PDF
46. Total hip arthroplasty for sickle cell osteonecrosis: guidelines for perioperative management
- Author
-
Jacques Pariat, Victor Housset, Arnaud Dubory, Charles Henri Flouzat Lachaniette, and Philippe Hernigou
- Subjects
030222 orthopedics ,medicine.medical_specialty ,Sickle Cell Disease ,Perioperative management ,business.industry ,Instructional Lecture: Hip ,Disease ,Total Hip Arthroplasty ,Surgery ,03 medical and health sciences ,Hip Osteonecrosis ,0302 clinical medicine ,medicine ,Orthopedics and Sports Medicine ,030212 general & internal medicine ,business ,Total hip arthroplasty - Abstract
The prognosis of sickle cell disease (SCD) has greatly improved in recent years, resulting in an increased number of patients reporting musculoskeletal complications such as osteonecrosis of the femoral head. Total hip arthroplasty (THA) can be utilized to alleviate the pain associated with this disease. Although it is well known that hip arthroplasty for avascular necrosis (AVN) in SCD may represent a challenge for the surgeon, complications are frequent, and no guidelines exist to prevent these complications. Because patients with SCD will frequently undergo THA, we thought it necessary to fulfil the need for guidance recommendations based on experience, evidence and agreement from the literature. For all these reasons this review proposes guidelines that provide clinicians with a document regarding management of patients with SCD in the period of time leading up to primary THA. The recommendations provide guidance that has been informed by the clinical expertise and experience of the authors and available literature. Although this is not a systematic review since some papers may have been published in languages other than English, our study population consisted of 5,868 patients, including 2,126 patients with SCD operated on for THA by the senior author in the same hospital during 40 years and 3,742 patients reported in the literature. Cite this article: EFORT Open Rev 2020;5:641-651. DOI: 10.1302/2058-5241.5.190073
- Published
- 2020
47. Stress shielding at the bone‐implant interface: Influence of surface roughness and of the bone‐implant contact ratio
- Author
-
Vu-Hieu Nguyen, Guillaume Haiat, Maria Letizia Raffa, Charles Henri Flouzat Lachaniette, Philippe Hernigou, Laboratoire Modélisation et Simulation Multi-Echelle (MSME), Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12)-Centre National de la Recherche Scientifique (CNRS)-Université Gustave Eiffel, CHU Henri Mondor, Institut Mondor de Recherche Biomédicale (IMRB), Institut National de la Santé et de la Recherche Médicale (INSERM)-IFR10-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12), H2020 European Research Council. Grant Number: 682001, Institut Supérieur de Mécanique de Paris (ISAE-Supméca), Laboratoire QUARTZ (QUARTZ ), Université Paris 8 Vincennes-Saint-Denis (UP8)-Ecole Nationale Supérieure de l'Electronique et de ses Applications (ENSEA)-Institut Supérieur de Mécanique de Paris (ISAE-Supméca), and Raffa, Maria Letizia
- Subjects
Materials science ,Bone-Implant Interface ,Finite Element Analysis ,[SPI.GCIV.STRUCT] Engineering Sciences [physics]/Civil Engineering/Structures ,FOS: Physical sciences ,Physics - Classical Physics ,02 engineering and technology ,Surface finish ,[SPI.MECA.SOLID]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Solid mechanics [physics.class-ph] ,Bone tissue ,Osseointegration ,03 medical and health sciences ,0302 clinical medicine ,[SPI.MECA.BIOM] Engineering Sciences [physics]/Mechanics [physics.med-ph]/Biomechanics [physics.med-ph] ,Shear stress ,medicine ,Surface roughness ,Humans ,[SPI.MECA.SOLID] Engineering Sciences [physics]/Mechanics [physics.med-ph]/Solid mechanics [physics.class-ph] ,stress-shielding ,Orthopedics and Sports Medicine ,Composite material ,Waviness ,Classical Physics (physics.class-ph) ,osseointegration ,[SPI.MECA.BIOM]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Biomechanics [physics.med-ph] ,finite element modeling ,030206 dentistry ,Stress shielding ,021001 nanoscience & nanotechnology ,Physics - Medical Physics ,medicine.anatomical_structure ,[SPI.MECA.STRU]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Structural mechanics [physics.class-ph] ,surface roughness ,bone-implant interface ,Stress, Mechanical ,[SPI.MECA.STRU] Engineering Sciences [physics]/Mechanics [physics.med-ph]/Structural mechanics [physics.class-ph] ,Medical Physics (physics.med-ph) ,[SPI.GCIV.STRUCT]Engineering Sciences [physics]/Civil Engineering/Structures ,0210 nano-technology - Abstract
Short and long-term stabilities of cementless implants are strongly determined by the interfacial load transfer between implants and bone tissue. Stress-shielding effects arise from shear stresses due to the difference of material properties between bone and the implant. It remains difficult to measure the stress field in periprosthetic bone tissue. This study proposes to investigate the dependence of the stress field in periprosthetic bone tissue on i) the implant surface roughness, ii) material properties of bone and of the implant, iii) the bone-implant contact ratio. To do so, a microscale 2-D finite element model of an osseointegrated boneimplant interface was developed where the surface roughness was modeled by a sinusoidal surface. The results show that the isostatic pressure is not affected by the presence of the bone-implant interface while shear stresses arise due to the combined effects of a geometrical singularity (for low surface roughness) and of shear stresses at the bone-implant interface (for high surface roughness). Stress-shielding effects are likely to be more important when the bone-implant contact ratio value is low, which corresponds to a case of relatively low implant stability. Shear stress reach a maximum value at a distance from the interface comprised between 0 and 0.1 time roughness wavelength $\lambda$ and tend to 0 at a distance from the implant surface higher than $\lambda$, independently from bone-implant contact ratio and waviness ratio. A comparison with an analytical model allows validating the numerical results. Future work should use the present approach to model osseointegration phenomena., Comment: Journal of Orthopaedic Research, Wiley, In press
- Published
- 2020
- Full Text
- View/download PDF
48. Bone Marrow Concentrate (BMC) Therapy in Musculoskeletal Disorders: Evidence-Based Policy Position Statement of American Society of Interventional Pain Physicians (ASIPP)
- Author
-
Kenneth Mautner, Matthew Lucas, Ian Stemper, Shane A. Shapiro, Joshua A Hirsch, Christopher Gharibo, Maanasa V Manchikanti, Kenneth D. Candido, Theodore Sand, Alaa Abd-Elsayed, Sudhir Diwan, Sarah M. Pastoriza, Michael Fredericson, Ramarao Pasupuleti, Alan D. Kaye, Christopher J. Centeno, Cameron Cartier, Mahendra R Sanapati, Douglas P. Beall, Nebojsa Nick Knezevic, Vidyasagar Pampati, Samuel Murala, Philippe Hernigou, R Amadeus Mason, Steve M. Aydin, Mairin A Jerome, Joanne Borg-Stein, Cyril Philip, Amol Soin, Ricardo M. Buenaventura, Joseph A Cabaret, Gerard A. Malanga, Radomir Kosanovic, Zachary Fausel, Aaron K. Calodney, Rinoo V. Shah, Ehren Dodson, Adam M. Kaye, Laxmaiah Manchikanti, Mayank Gupta, Bradley W. Wargo, Sheri L. Albers, Annu Navani, Don Buford, Richard E. Latchaw, and Sairam Atluri
- Subjects
medicine.medical_specialty ,Evidence-based practice ,business.industry ,MEDLINE ,Investigational New Drug ,Evidence-based medicine ,law.invention ,Transplantation ,Anesthesiology and Pain Medicine ,Systematic review ,Randomized controlled trial ,law ,medicine ,Intensive care medicine ,business ,Evidence-based policy - Abstract
BACKGROUND The use of bone marrow concentrate (BMC) for treatment of musculoskeletal disorders has become increasingly popular over the last several years, as technology has improved along with the need for better solutions for these pathologies. The use of cellular tissue raises a number of issues regarding the US Food and Drug Administration's (FDA) regulation in classifying these treatments as a drug versus just autologous tissue transplantation. In the case of BMC in musculoskeletal and spine care, this determination will likely hinge on whether BMC is homologous to the musculoskeletal system and spine. OBJECTIVES The aim of this review is to describe the current regulatory guidelines set in place by the FDA, specifically the terminology around "minimal manipulation" and "homologous use" within Regulation 21 CFR Part 1271, and specifically how this applies to the use of BMC in interventional musculoskeletal medicine. METHODS The methodology utilized here is similar to the methodology utilized in preparation of multiple guidelines employing the experience of a panel of experts from various medical specialties and subspecialties from differing regions of the world. The collaborators who developed these position statements have submitted their appropriate disclosures of conflicts of interest. Trustworthy standards were employed in the creation of these position statements. The literature pertaining to BMC, its effectiveness, adverse consequences, FDA regulations, criteria for meeting the standards of minimal manipulation, and homologous use were comprehensively reviewed using a best evidence synthesis of the available and relevant literature. RESULTS/Summary of Evidence: In conjunction with evidence-based medicine principles, the following position statements were developed: Statement 1: Based on a review of the literature in discussing the preparation of BMC using accepted methodologies, there is strong evidence of minimal manipulation in its preparation, and moderate evidence for homologous utility for various musculoskeletal and spinal conditions qualifies for the same surgical exemption. Statement 2: Assessment of clinical effectiveness based on extensive literature shows emerging evidence for multiple musculoskeletal and spinal conditions. • The evidence is highest for knee osteoarthritis with level II evidence based on relevant systematic reviews, randomized controlled trials and nonrandomized studies. There is level III evidence for knee cartilage conditions. • Based on the relevant systematic reviews, randomized trials, and nonrandomized studies, the evidence for disc injections is level III. • Based on the available literature without appropriate systematic reviews or randomized controlled trials, the evidence for all other conditions is level IV or limited for BMC injections. Statement 3: Based on an extensive review of the literature, there is strong evidence for the safety of BMC when performed by trained physicians with the appropriate precautions under image guidance utilizing a sterile technique. Statement 4: Musculoskeletal disorders and spinal disorders with related disability for economic and human toll, despite advancements with a wide array of treatment modalities. Statement 5: The 21st Century Cures Act was enacted in December 2016 with provisions to accelerate the development and translation of promising new therapies into clinical evaluation and use. Statement 6: Development of cell-based therapies is rapidly proliferating in a number of disease areas, including musculoskeletal disorders and spine. With mixed results, these therapies are greatly outpacing the evidence. The reckless publicity with unsubstantiated claims of beneficial outcomes having putative potential, and has led the FDA Federal Trade Commission (FTC) to issue multiple warnings. Thus the US FDA is considering the appropriateness of using various therapies, including BMC, for homologous use. Statement 7: Since the 1980's and the description of mesenchymal stem cells by Caplan et al, (now called medicinal signaling cells), the use of BMC in musculoskeletal and spinal disorders has been increasing in the management of pain and promoting tissue healing. Statement 8: The Public Health Service Act (PHSA) of the FDA requires minimal manipulation under same surgical procedure exemption. Homologous use of BMC in musculoskeletal and spinal disorders is provided by preclinical and clinical evidence. Statement 9: If the FDA does not accept BMC as homologous, then it will require an Investigational New Drug (IND) classification with FDA (351) cellular drug approval for use. Statement 10: This literature review and these position statements establish compliance with the FDA's intent and corroborates its present description of BMC as homologous with same surgical exemption, and exempt from IND, for use of BMC for treatment of musculoskeletal tissues, such as cartilage, bones, ligaments, muscles, tendons, and spinal discs. CONCLUSIONS Based on the review of all available and pertinent literature, multiple position statements have been developed showing that BMC in musculoskeletal disorders meets the criteria of minimal manipulation and homologous use. KEY WORDS Cell-based therapies, bone marrow concentrate, mesenchymal stem cells, medicinal signaling cells, Food and Drug Administration, human cells, tissues, and cellular tissue-based products, Public Health Service Act (PHSA), minimal manipulation, homologous use, same surgical procedure exemption.
- Published
- 2020
- Full Text
- View/download PDF
49. Guidelines for clinical diagnosis and treatment of osteonecrosis of the femoral head in adults (2019 version)
- Author
-
Stuart B. Goodman, Philippe Hernigou, Jiake Xu, Ling Qin, Baoyi Liu, Lu Li, Shin Yoon Kim, William C. Lineaweaver, Benjie Wang, Quanjun Cui, Feng Zhang, Dewei Zhao, and Wolf Drescher
- Subjects
medicine.medical_specialty ,lcsh:Diseases of the musculoskeletal system ,MRI, Magnetic resonance imaging ,Pathological staging ,BMES, Bone marrow oedema syndrome ,Guideline ,PET, Positron emission tomography ,Femoral head ,Quality of life ,Diagnosis ,Epidemiology ,medicine ,Orthopedics and Sports Medicine ,DSA, Digital subtraction angiography ,Intensive care medicine ,Pathological ,business.industry ,T1WI, T1-weighted images ,ARCO, Association Research Circulation Osseous ,Osteonecrosis of the femoral head (ONFH) ,Treatment ,medicine.anatomical_structure ,ONFH, Osteonecrosis of the femoral head ,Perspective ,SPECT, Single-photon emission computed tomography ,Orthopedic surgery ,Etiology ,CT, Computed tomography ,lcsh:RC925-935 ,business ,RHS, Reconstruction Hip Scores - Abstract
Osteonecrosis of the femoral head (ONFH) is a common and refractory disease in orthopaedic clinics. The number of patients with ONFH is increasing worldwide every year. There are an estimated 8.12 million patients with nontraumatic osteonecrosis in China alone. Treatment of nontraumatic osteonecrosis has always been a clinical challenge for orthopaedic surgeons. To further standardize diagnosis and treatment of ONFH, these guidelines provide not only basic diagnosis, treatment, and evaluation systems for ONFH but also expert advice and standards in many aspects, including epidemiology, aetiology, diagnostic criteria, pathological staging, prevention and treatment options, and postoperative rehabilitation. The aetiological factors of ONFH can currently be divided into two major categories: traumatic and nontraumatic; however, the specific pathological mechanism of ONFH is not completely clear. Currently, the staging system of ONFH formulated by the Association Research Circulation Osseous is widely used in clinical practice. Based on the changes in the intraosseous blood supply at different stages, the corresponding nonsurgical and surgical treatments are recommended, and when there are risk factors for possible ONFH, certain preventive measures to avoid the occurrence of osteonecrosis are recommended. These guidelines provide brief classification criteria and treatment regimen for osteonecrosis. Specification of the aetiology, treatment plan based on comprehensive consideration of the different stages of osteonecrosis, hip function, age, and occupation of the patients are important steps in diagnosis and developing treatment strategies. Translational potential of this article: New advances in the epidemiology, etiology, pathophysiology, imaging, diagnosis and treatment of ONFH have been renewed in this revision. This guideline can be used for reference by orthopedic professionals and researchers, and for standardized diagnosis and treatment management under the clinical guidance, which is conducive to the prevention, treatment and further research of ONFH, improving the diagnosis and treatment level, making patients' symptoms under good control, and improving their quality of life. Keywords: Diagnosis, Guideline, Osteonecrosis of the femoral head (ONFH), Treatment
- Published
- 2020
- Full Text
- View/download PDF
50. Scientists should be awarded: International Orthopaedics publishes the 2021 SICOT Research Awards
- Author
-
Hernigou, Philippe Mavrogenis, Andreas F. Scarlat, Marius M.
- Published
- 2022
Catalog
Discovery Service for Jio Institute Digital Library
For full access to our library's resources, please sign in.