10 results on '"Efstathios G. Ballas"'
Search Results
2. Reliability of the classification of proximal femur fractures: Does clinical experience matter?
- Author
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Tom J. Crijns, Stein J. Janssen, Jacob T. Davis, David Ring, Hugo B. Sanchez, Peter Althausen, Michael H. Amini, Paul Appleton, George C. Babis, Reto H. Babst, Efstathios G. Ballas, Antonio Barquet, Thierry Begue, Julius Bishop, Lars C. Borris, Richard Buckley, Tim Chesser, Pradeep Choudhari, Charles Cornell, Brett D. Crist, Thomas A. DeCoster, Nelson Elias, Frede Frihagen, Christos Garnavos, Vincenzo Giordano, R. Haverlag, Tomo Havlicek, Shep Hurwit, Edward F. Ibrahim, Vishwanath M. Iyer, Richard Jenkinson, Kyle Jeray, Koroush Kabir, Nikolaos K. Kanakaris, Cyrus Klostermann, Hans J. Kreder, B.E. Kreis, Anze Kristan, P. Lygdas, Iain McGraw, Ladislav Mica, B. Mirck, Jesus Moreta-Suarez, Steven J. Morgan, Vassilios S. Nikolaou, Timothy Omara, Rodrigo Pesantez, Marinis Pirpiris, L.M.S.J. Poelhekke, Ippokratis Pountos, Michael Prayson, M. Quell, Juan M. Rodríguez-Roiz, Wojciech Satora, Peter Schandelmaier, T. Schepers, Nicholas L. Short, Raymond M. Smith, A.B. Spoor, Emilija Stojkovska Pemovska, Marc Swiontkowski, Lisa Taitsman, Theodoros Tosounidis, Minos Tyllianakis, C.J.A. Van bergen, M.A.J. Van de Sande, S.H. Van Helden, Diederik O. Verbeek, Daniel C. Wascher, Yoram Weil, Graduate School, AMS - Sports & Work, APH - Quality of Care, APH - Personalized Medicine, and Surgery
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Male ,medicine.medical_specialty ,Radiography ,Traumatology ,03 medical and health sciences ,Femoral head ,0302 clinical medicine ,Humans ,Medicine ,030212 general & internal medicine ,Aged ,General Environmental Science ,Femoral neck ,Observer Variation ,030222 orthopedics ,Hip Fractures ,business.industry ,Reproducibility of Results ,Femur Head ,Middle Aged ,Confidence interval ,Cross-Sectional Studies ,Orthopedics ,medicine.anatomical_structure ,Standard error ,Orthopedic surgery ,General Earth and Planetary Sciences ,Female ,Clinical Competence ,Radiology ,business ,Femoral Fractures ,Kappa - Abstract
Background: Radiographic fracture classification helps with research on prognosis and treatment. AO/OTA classification into fracture type has shown to be reliable, but further classification of fractures into subgroups reduces the interobserver agreement and takes a considerable amount of practice and experience in order to master. Questions/purposes: We assessed: (1) differences between more and less experienced trauma surgeons based on hip fractures treated per year, years of experience, and the percentage of their time dedicated to trauma, (2) differences in the interobserver agreement between classification into fracture type, group, and subgroup, and (3) differences in the interobserver agreement when assessing fracture stability compared to classifying fractures into type, group and subgroup. Methods: This study used the Science of Variation Group to measure factors associated with variation in interobserver agreement on classification of proximal femur fractures according to the AO/OTA classification on radiographs. We selected 30 anteroposterior radiographs from 1061 patients aged 55 years or older with an isolated fracture of the proximal femur, with a spectrum of fracture types proportional to the full database. To measure the interobserver agreement the Fleiss’ kappa was determined and bootstrapping (resamples = 1000) was used to calculate the standard error, z statistic, and 95% confidence intervals. We compared the Kappa values of surgeons with more experience to less experienced surgeons. Results: There were no statistically significant differences in the Kappa values on each classification level (type, group, subgroup) between more and less experienced surgeons. When all surgeons were combined into one group, the interobserver reliability was the greatest for classifying the fractures into type (kappa, 0.90; 95% CI, 0.83 to 0.97; p < 0.001), reflecting almost perfect agreement. When comparing the kappa values between classes (type, group, subgroup), we found statistically significant differences between each class. Substantial agreement was found in the clinically relevant groups stable/unstable trochanteric, displaced/non-displaced femoral neck, and femoral head fractures (kappa, 0.60; 95% CI, 0.53 to 0.67, p < 0.001). Conclusions: This study adds to a growing body of evidence that relatively simple distinctions are more reliable and that this is independent of surgeon experience.
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- 2018
3. Recurrent Dislocation of The Extensor Carpi Ulnaris Tendon in a Water-Polo Athlete
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Sarantis-Petros G. Spyridonos, Konstantinos Raptis, Efstathios G. Ballas, and Ioannis P. Stathopoulos
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medicine.medical_specialty ,Extensor Carpi Ulnaris ,Population ,Case Report ,Recurrent dislocation ,Wrist ,03 medical and health sciences ,Retinaculum ,0302 clinical medicine ,Subluxation ,medicine ,Dislocation ,education ,030222 orthopedics ,education.field_of_study ,business.industry ,030229 sport sciences ,General Medicine ,musculoskeletal system ,medicine.disease ,Surgery ,Tendon ,body regions ,Extensor carpi ulnaris tendon ,medicine.anatomical_structure ,business - Abstract
Introduction Dislocation/subluxation of the Extensor Carpi Ulnaris (ECU) tendon is a rare condition in the general population, but is a common problem among athletes that subject their wrists to forceful rotational movements. Pain and snapping sensation at the dorsoulnar aspect of the wrist especially during supination are the predominant symptoms that often necessitate surgical intervention. Case presentation We present a case of a professional water-polo athlete with recurrent ECU tendon dislocation, in whom a combination of direct repair of the tendon's subsheath and reinforcement with an extensor retinaculum graft led to definitive resolution of her symptoms and resulted in her uneventful return to high-level sport activities 4 months postoperatively. Conclusions The treatment of symptomatic ECU instability is still controversial, especially for acute dislocations. Depending on the type of injury many surgical techniques have been proposed. Combination of direct repair of the tendon's subsheath and reinforcement with an extensor retinaculum graft is a reliable option.
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- 2016
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4. A review on osteoporosis in men
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Kalliopi Lampropoulou-Adamidou, Ioannis P. Stathopoulos, George Trovas, and Efstathios G. Ballas
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Male ,Pediatrics ,medicine.medical_specialty ,Aging ,Bone Density Conservation Agents ,business.industry ,Endocrinology, Diabetes and Metabolism ,Osteoporosis ,General Medicine ,medicine.disease ,Bone and Bones ,Bone Density ,Risk Factors ,Physical therapy ,Medicine ,Humans ,Osteoporotic fracture ,business ,Gonadal Steroid Hormones - Abstract
However, a great proportion of men with osteoporosis are not diagnosed and do not receive any treatment. This phenomenon is observed even in men who have sus-tained an osteoporotic fracture, with only about 10% under anti-osteoporotic treatment. It is also worrisome that studies that have highlighted the underdiagnosis/undertreatment problem come from countries with advanced health utilities.
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- 2015
5. Arthroscopic release of shoulder internal rotation contracture in children with brachial plexus birth palsy
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Zinon T, Kokkalis, Efstathios G, Ballas, and Andreas F, Mavrogenis
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Joint Capsule Release ,Male ,Arthroscopy ,Contracture ,Rotation ,Shoulder Joint ,Child, Preschool ,Birth Injuries ,Humans ,Brachial Plexus Neuropathies - Abstract
In children with brachial plexus birth palsy, the unopposed contraction of the shoulder internal rotators and adductors, secondary to weakness of the external rotators and abductors, leads to internal rotation contracture of the shoulder joint. Latissimus dorsi and/or teres major tendon transfers combined with open musculotendinous lengthening can improve shoulder function. Arthroscopic release of the anterior glenohumeral ligaments, capsule and upper intra-articular subscapularis tendon, with or without tendon transfer(s), can also be performed in young children to restore external rotation and abduction of the shoulder. Joint alignment, thus obtained, may provide improvement of glenohumeral joint morphology in the long term, although the extent of glenoid remodeling has not been well defined. The authors review and discuss the recent literature on arthroscopic release, with or without tendon transfers, for reduction of the glenohumeral joint subluxation and for restoration of external rotation. Both pathologies respond well to these procedures. According to the literature, arthroscopic release "alone" may be sufficient in children up to 3 years. This minimally invasive procedure restores function successfully, and leads to a centered glenohumeral joint and to glenoid remodeling. A successful arthroscopic release of the shoulder in a 2.5-year-old child is described.
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- 2013
6. Collagen nerve wrap for median nerve scarring
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Zinon T. Kokkalis, Panayotis N. Soucacos, Efstathios G. Ballas, Andreas F. Mavrogenis, and Panayiotis J. Papagelopoulos
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Adult ,Male ,medicine.medical_specialty ,Tissue Adhesions ,Cicatrix ,Absorbable Implants ,medicine ,Humans ,Orthopedics and Sports Medicine ,Carpal tunnel syndrome ,Aged ,Tissue Adhesion ,business.industry ,medicine.disease ,Complete resolution ,Carpal Tunnel Syndrome ,Median nerve ,Surgery ,Median Nerve ,Tissue healing ,Female ,Immunologic Reactions ,Collagen ,Epineurial repair ,business ,Type I collagen - Abstract
Nerve wrapping materials have been manufactured to inhibit nerve tissue adhesions and diminish inflammatory and immunologic reactions in nerve surgery. Collagen nerve wrap is a biodegradable type I collagen material that acts as an interface between the nerve and the surrounding tissues. Its main advantage is that it stays in place during the period of tissue healing and is then gradually absorbed once tissue healing is completed. This article presents a surgical technique that used a collagen nerve wrap for the management of median nerve tissue adhesions in 2 patients with advanced carpal tunnel syndrome due to median nerve scarring and adhesions. At last follow-up, both patients had complete resolution with no recurrence of their symptoms. Complications related to the biodegradable material were not observed. [ Orthopedics . 2015; 38(2):117–121.]
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- 2013
7. Modified McLaughlin Technique for Neglected Locked Posterior Dislocation of the Shoulder
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Panayiotis J. Papagelopoulos, Zinon T. Kokkalis, Efstathios G. Ballas, John Papanastasiou, and Andreas F. Mavrogenis
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Adult ,Male ,musculoskeletal diseases ,medicine.medical_specialty ,Tendon Transfer ,Suture Anchors ,Absorbable Implants ,medicine ,Humans ,Orthopedics and Sports Medicine ,Rotator cuff ,Lesser Tuberosity ,Suture anchors ,Aged ,Bone Transplantation ,Impaction ,business.industry ,Shoulder Dislocation ,Suture Techniques ,Middle Aged ,Combined Modality Therapy ,Brace ,Tendon ,Surgery ,Treatment Outcome ,medicine.anatomical_structure ,Female ,Posterior dislocation ,Range of motion ,business - Abstract
Several surgical techniques have been described for the treatment of posterior shoulder dislocation depending on the time elapsed between injury and surgery and the size of the humeral head impression fracture. When the bone defect is between 25% and 50% of the articular surface of the head, the procedures of choice are autologous bone graft or allograft or subscapularis tendon or lesser tuberosity transfer. In neglected cases in which patients undergo surgery more than 3 weeks after injury, no standard accepted treatment for this injury exists. This article presents a modification of the McLaughlin technique for patients with neglected locked posterior dislocation of the shoulder. Using this technique, the shape of the humeral head was nearly restored with impaction of morselized bone allograft; two suture anchors were inserted into the defect, and the lesser tuberosity with the attached sub-scapularis tendon was transferred into the defect and secured with sutures. Postoperative rehabilitation included immobilization of the shoulder with an external rotation brace for 6 weeks followed by progressive passive, active-assisted, and active range of motion and rotator cuff strengthening exercises for another 6 weeks. This technique resulted in pain-free range of motion, a stable shoulder, and good joint congruency.
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- 2013
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8. Instrumentation related complications in spine surgery
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George Mimidis, Konstantinos Tolis, Panayiotis J. Papagelopoulos, Konstantinos Soultanis, Eirineos Karamanis, Efstathios G. Ballas, and Andreas F. Mavrogenis
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medicine.medical_specialty ,Spinal instrumentation ,business.industry ,medicine.medical_treatment ,Incidence ,Biomedical Engineering ,Treatment options ,Global Health ,World health ,Spine ,Surgery ,Spine surgery ,Postoperative Complications ,Spinal Fusion ,Spinal fusion ,Medicine ,Humans ,Spinal Diseases ,Instrumentation (computer programming) ,business ,General Dentistry - Abstract
Spinal instrumentation constructs are frequently necessary for the surgical management of patients with variable spinal pathology. However, surgical complications may appear. These should be detected early and managed to achieve recovery and good functional outcome for the patient. This article provides an in-depth analysis of the most common instrumentation-related complications of spine surgery as well as a diagnostic plan and treatment options for the management of these challenging entities once they occur.
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- 2013
9. Distal biceps and triceps ruptures
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Panayotis N. Soucacos, Zinon T. Kokkalis, Andreas F. Mavrogenis, and Efstathios G. Ballas
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medicine.medical_specialty ,medicine.medical_treatment ,Biceps ,Tendons ,Fixation (surgical) ,Tendon Injuries ,Suture Anchors ,medicine ,Humans ,Orthopedic Procedures ,General Environmental Science ,Rupture ,Arm Injuries ,Wound Healing ,Rehabilitation ,medicine.diagnostic_test ,business.industry ,Ossification ,Ossification, Heterotopic ,Suture Techniques ,Magnetic resonance imaging ,medicine.disease ,Magnetic Resonance Imaging ,Tendon ,Surgery ,Biomechanical Phenomena ,medicine.anatomical_structure ,Treatment Outcome ,Radial Artery ,General Earth and Planetary Sciences ,Heterotopic ossification ,medicine.symptom ,business - Abstract
Biceps and triceps tendon ruptures are rather uncommon injuries and are most commonly diagnosed clinically. Magnetic resonance imaging can help the clinician to differentiate an incomplete tear and define any degeneration of the tendon. Surgical anatomical repair is typically performed in acute complete ruptures whereas nonoperative treatment can be used for partial ruptures, as well as for patients unfit for surgery. Single incision techniques are associated with a higher rate of nerve injuries, while double incision repairs have a higher prevalence of heterotopic ossification. Although various fixation methods have been applied including bone tunnels, interference screws, suture anchors, cortical button fixation, the current evidence does not support the superiority of one method over the other. A well-planned postoperative rehabilitation programme is essential for a good final outcome. As better fixation devices are being used, more aggressive rehabilitation programmes have been applied. Epidemiology, clinical evaluation, diagnosis, surgical and conservative management of these injuries are presented in this review along with the authors' preferred technique for the anatomical repair of acute complete ruptures.
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- 2013
10. Bilateral neglected posterior fracture-dislocation of the shoulders
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Zinon T. Kokkalis, Andreas F. Mavrogenis, Efstathios G. Ballas, Aristides B. Zoubos, and Panayiotis J. Papagelopoulos
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musculoskeletal diseases ,Adult ,Male ,medicine.medical_specialty ,Shoulders ,Radiography ,medicine ,Humans ,Orthopedics and Sports Medicine ,Rotator cuff ,Lesser Tuberosity ,Diagnostic Errors ,business.industry ,Multiple Trauma ,Shoulder Dislocation ,medicine.disease ,Surgery ,medicine.anatomical_structure ,Treatment Outcome ,Orthopedic surgery ,Shoulder Fractures ,Dislocation ,business ,Range of motion ,Grand mal seizure - Abstract
Full article available online at Healio.com/Orthopedics. Search: 20120919-26 Posterior dislocation of the shoulder is an uncommon injury. Diagnosis is difficult and often missed. Once diagnosed, management must be individualized depending on the amount of the defect of the humeral head and the time from injury. This article pres-ents a case of a 40-year-old man with a 4-month history of bilateral locked posterior fracture–dislocation of the shoulders after a grand mal seizure. Imaging showed loss of the glenohumeral joint lines congruency, reverse Hill-Sachs lesions, and articular defects of 35% and 40% of the humeral heads. A modified McLaughlin technique was performed in both shoulders in a single stage. Through the standard deltopec-toral approach, the lesser tuberosity was osteotomized with the subscapularis and capsule attached and elevated to expose the humeral head and glenoid. The shape of the humeral head was restored by packing the defect with morselized bone allograft. Before packing the allograft into the defect, 2 absorbable suture anchors were inserted at the bottom of the defect; the lesser tuberosity was transferred into the defect, and fixed with 2 transosseous horizontal mattress sutures. Stable fixation was evaluated intraoperatively, and the wound was closed in layers. Postoperatively, both shoulders were immobilized with external rotation braces for 6 weeks, followed by passive, active-assisted, and progressively active range of shoulder motion and rotator cuff strengthening exercises for the next 6 weeks. At 12 weeks postoperatively, full range of motion was accomplished, and full activity was allowed. At 22-month follow-up, the patient was satisfied with his level of function; both shoulder joints were painless and stable without apprehension or recurrence of instability. Radiographs showed congru -ent joints and complete incorporation of the allograft into the defect with restoration of the shape of the humeral head.
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- 2012
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