15 results on '"Ahlden, Mattias"'
Search Results
2. Analysis of the influence of anaesthesia on the clinical and quantitative assessment of the pivot shift: a multicenter international study
- Author
-
Lopomo, Nicola, Signorelli, Cecilia, Rahnemai-Azar, Amir Ata, Raggi, Federico, Hoshino, Yuichi, Samuelsson, Kristian, Musahl, Volker, Karlsson, Jon, Kuroda, Ryosuke, Zaffagnini, Stefano, Oostdyk, Alicia, Arilla, Fabio, Guenther, Daniel, Zlotnicki, Jason, Ohashi, Bruno, Araujo, Paulo, Kurosaka, Masahiro, Nagamune, Kouki, Mucchioli, Giulio Maria Marcheggiani, Kopka, Michaela, Irrgang, James J., Bjoernsson, Haukur, Ahlden, Mattias, Desai, Neel, Fu, Freddie H., and PIVOT Study Group
- Published
- 2017
- Full Text
- View/download PDF
3. Trends in Surgeon Preferences on Anterior Cruciate Ligament Reconstructive Techniques
- Author
-
Samuelsson, Kristian, Andersson, Daniel, Ahldén, Mattias, Fu, Freddie H., Musahl, Volker, and Karlsson, Jón
- Published
- 2013
- Full Text
- View/download PDF
4. Rotatory Knee Laxity
- Author
-
Ahldén, Mattias, Samuelsson, Kristian, Fu, Freddie H., Musahl, Volker, and Karlsson, Jón
- Published
- 2013
- Full Text
- View/download PDF
5. Comparison of three non-invasive quantitative measurement systems for the pivot shift test
- Author
-
Araujo, Paulo H., Ahlden, Mattias, Hoshino, Yuichi, Muller, Bart, Moloney, Gele, Fu, Freddie H., and Musahl, Volker
- Published
- 2012
- Full Text
- View/download PDF
6. The pivot shift: a global user guide
- Author
-
Musahl, Volker, Hoshino, Yuichi, Ahlden, Mattias, Araujo, Paulo, Irrgang, James J., Zaffagnini, Stefano, Karlsson, Jon, and Fu, Freddie H.
- Published
- 2012
- Full Text
- View/download PDF
7. Standardized pivot shift test improves measurement accuracy
- Author
-
Hoshino, Yuichi, Araujo, Paulo, Ahlden, Mattias, Moore, Charity G., Kuroda, Ryosuke, Zaffagnini, Stefano, Karlsson, Jon, Fu, Freddie H., and Musahl, Volker
- Published
- 2012
- Full Text
- View/download PDF
8. Patient-Reported and Quantitative Outcomes of Anatomic Anterior Cruciate Ligament Reconstruction With Hamstring Tendon Autografts
- Author
-
Diermeier, Theresa, Meredith, Sean J, Irrgang, James J, Zaffagnini, Stefano, Kuroda, Ryosuke, Hochino, Yuichi, Samuelsson, Kristian, Smith, Clair Nicole, Popchak, Adam, Musahl, Volker, PIVOT Study Group, Sheean, Andrew, Burnham, Jeremy M, Lian, Jayson, Smith, Clair, Herbst, Elmar, Pfeiffer, Thomas, Araujo, Paulo, Oostdyk, Alicia, Guenther, Daniel, Ohashi, Bruno, Fu, Freddie H, Nagamune, Kouki, Kurosaka, Masahiro, Grassi, Alberto, Muccioli, Giulio, Lopomo, Nicola, Signorelli, Cecilia, Raggi, Federico, Horvath, Alexandra, Svantesson, Eleonor, Senorski, Eric Hamrin, Sundemo, David, Bjoernsson, Haukur, Ahlden, Mattias, Desai, Neel, Karlsson, Jon, UCL - SSS/LDRI - Louvain Drug Research Institute, Diermeier T., Meredith S.J., Irrgang J.J., Zaffagnini S., Kuroda R., Hochino Y., Samuelsson K., Smith C.N., Popchak A., Musahl V., Sheean A., Burnham J.M., Lian J., Smith C., Herbst E., Pfeiffer T., Araujo P., Oostdyk A., Guenther D., Ohashi B., Fu F.H., Nagamune K., Kurosaka M., Grassi A., Muccioli G.M.M., Lopomo N., Signorelli C., Raggi F., Horvath A., Svantesson E., Senorski E.H., Sundemo D., Bjoernsson H., Ahlden M., Desai N., and Karlsson J.
- Subjects
Translation ,inertial sensor ,Anterior cruciate ligament reconstruction ,Anterior cruciate ligament ,medicine.medical_treatment ,Pivot shift ,Acceleration ,rotatory knee instability ,translation ,Article ,Image analysis ,Inertial sensor ,image analysis ,medicine ,Orthopedics and Sports Medicine ,Rotary knee instabiblity ,Orthodontics ,business.industry ,ACL ,anterior cruciate ligament ,acceleration ,medicine.anatomical_structure ,Hamstring tendon ,business ,image analysi ,pivot shift - Abstract
Background: The pivot-shift test has become more consistent and reliable and is a meaningful outcome measurement after anterior cruciate ligament reconstruction (ACLR). Purpose/Hypothesis: The purpose of this investigation was to assess patient-reported outcomes (PROs) and the quantitative pivot shift (QPS) preoperatively, at time zero immediately after anatomic ACLR, and after 24 months as well as the relationship between PROs and the QPS. It was hypothesized that anatomic ACLR would restore rotatory stability measured by the pivot-shift test and that QPS measurements would be positively correlated with PROs. Study Design: Cohort study; Level of evidence, 2. Methods: The ACL-injured and contralateral uninjured knees from 89 of 107 (83.2%) enrolled patients at 4 international centers were evaluated using a standardized pivot-shift test. Tibial acceleration was assessed with an inertial sensor, and lateral compartment translation was measured using an image analysis system preoperatively, at time zero immediately postoperatively, and at follow-up after 2 years. PROs were assessed at 12 and 24 months postoperatively with the International Knee Documentation Committee (IKDC) subjective knee form, Cincinnati Knee Rating System (CKRS), Marx activity rating scale, and activity of daily living score (ADLS). Results: The mean patient age at surgery was 27 years (range, 15-45 years). A positive pivot shift preoperatively (side-to-side difference in tibial acceleration, 2.6 ± 4.0 m/s2; side-to-side difference in anterior tibial translation, 2.0 ± 2.0 mm) was reduced at time zero postoperatively (side-to-side difference in tibial acceleration, –0.5 ± 1.3 m/s2; side-to-side difference in anterior tibial translation, –0.1 ± 1.0 mm). All PROs improved from preoperatively to final follow-up at 24 months: from 56.5 to 85.5 points for the IKDC ( P = .0001), from 28.8 to 32.4 points for the CKRS ( P = .04), from 11.2 to 7.9 points for the Marx ( P < .0001), and from 75.7 to 91.6 points for the ADLS ( P < .0001). Neither preoperative nor time zero postoperative rotatory laxity assessed by the pivot-shift test correlated with PROs at 24-month follow-up. A graft retear was observed in 4 patients (4.5%) within 2 years of follow-up. Conclusion: Anatomic ACLR resulted in significantly improved and acceptable PROs at 2-year follow-up and a low failure rate. Anatomic ACLR restored QPS measurements of anterior tibial translation and tibial acceleration to those of the contralateral knee immediately after surgery while still under anesthesia, but there was no correlation between the QPS preoperatively or at time zero after ACLR and PROs at 2-year follow-up.
- Published
- 2020
9. Validation of Quantitative Measures of Rotatory Knee Laxity
- Author
-
Musahl, Volker, Griffith, Chad, Irrgang, James J., Hoshino, Yuichi, Kuroda, Ryosuke, Lopomo, Nicola, ZAFFAGNINI, STEFANO, Samuelsson, Kristian, Karlsson, Jon, Oostdyk, Alicia, Rahnemai Azar, Ata A., Arilla, Fabio V., Guenther, Daniel, Zlotnicki, Jason, Ohashi, Bruno, Araujo, Paulo, Kurosaka, Masahiro, Nagamune, Kouki, MARCHEGGIANI MUCCIOLI, GIULIO MARIA, Signorelli, Cecilia, Bjoernsson, Haukur, Ahlden, Mattias, Desai, Neel, Fu, Freddie H., Musahl, Volker, Griffith, Chad, Irrgang, James J., Hoshino, Yuichi, Kuroda, Ryosuke, Lopomo, Nicola, Zaffagnini, Stefano, Samuelsson, Kristian, Karlsson, Jon, Oostdyk, Alicia, Rahnemai Azar, Ata A., Arilla, Fabio V., Guenther, Daniel, Zlotnicki, Jason, Ohashi, Bruno, Araujo, Paulo, Kurosaka, Masahiro, Nagamune, Kouki, MARCHEGGIANI MUCCIOLI, GIULIO MARIA, Signorelli, Cecilia, Bjoernsson, Haukur, Ahlden, Mattia, Desai, Neel, and Freddie H., Fu
- Subjects
musculoskeletal diseases ,Adult ,Male ,inertial sensor ,Adolescent ,Knee Joint ,Physical Therapy ,Anterior cruciate ligament ,Pivot shift ,Physical Therapy, Sports Therapy and Rehabilitation ,Sports Therapy and Rehabilitation ,Young Adult ,03 medical and health sciences ,0302 clinical medicine ,medicine ,Tibial acceleration ,Humans ,Orthopedics and Sports Medicine ,Prospective Studies ,Rating system ,quantitative measurement of rotatory knee laxity ,Range of Motion, Articular ,Orthodontics ,030222 orthopedics ,Anterior Cruciate Ligament Reconstruction ,Arthrometry, Articular ,business.industry ,ACL ,Medicine (all) ,image analysis technique ,pivot shift ,030229 sport sciences ,Middle Aged ,musculoskeletal system ,Cross-Sectional Studies ,medicine.anatomical_structure ,Knee ligament ,Knee laxity ,Female ,business ,human activities - Abstract
Background:Prior attempts to quantify the pivot-shift examination have been too invasive or impractical for clinical use. A noninvasive method for quantifying rotatory knee laxity is needed.Hypothesis:Greater quantitative measurements of rotatory knee laxity (both of the involved knee as well as compared with the contralateral healthy knee) are associated with an increasing clinical pivot-shift grade.Study Design:Cross-sectional study; Level of evidence, 3.Methods:A total of 103 patients undergoing anatomic single-bundle anterior cruciate ligament (ACL) reconstruction at 4 international centers underwent a standardized pivot-shift test preoperatively on both knees while anesthetized. Clinical grading of the pivot shift was performed according to the International Knee Documentation Committee (IKDC) knee ligament rating system. Two different quantitative technologies were used to measure rotatory knee laxity: an inertial sensor and an image analysis were independently used to measure tibial acceleration and lateral compartment translation, respectively, during the pivot-shift test. Patients were dichotomized to “high-grade” (abnormal and severely abnormal) or “low-grade” (normal and nearly normal) rotatory knee laxity groups based on the clinical pivot-shift test result of the involved side. Tibial acceleration and lateral compartment translation of the involved knee and the side-to-side difference between the involved and contralateral knees were separately compared between the high- and low-grade rotatory knee laxity groups utilizing t tests; significance was set at P < .05.Results:Forty-three patients were in the low-grade rotatory knee laxity group, and 60 patients were in the high-grade rotatory knee laxity group. Patients in the high-grade knee laxity group had significantly higher lateral compartment translation as measured with the image analysis (involved knee: 3.8 ± 2.3 mm; side-to-side difference: 2.5 ± 2.4 mm) compared with patients in the low-grade group (involved knee: 2.0 ± 1.4 mm; side-to-side difference: 1.4 ± 1.5 mm) (both P < .01). As measured with the inertial sensor, tibial acceleration for patients in the high-grade group was significantly higher (involved knee: 7.2 ± 5.3 m/s2; side-to-side difference: 4.2 ± 5.4 m/s2) compared with patients in the low-grade group (involved knee: 4.2 ± 1.6 m/s2; side-to-side difference: 1.2 ± 1.2 m/s2) (both P < .01).Conclusion:The inertial sensor and image analysis techniques were able to detect differences between low- and high-grade pivot-shift test results. A quantitative assessment of the pivot-shift test could augment the diagnosis of an ACL injury and improve the ability to detect changes in rotatory knee laxity over time.
- Published
- 2016
10. High-grade rotatory knee laxity may be predictable in ACL injuries
- Author
-
Musahl, Volker, Burnham, Jeremy, Lian, Jayson, Popchak, Adam, Svantesson, Eleonor, Kuroda, Ryosuke, Zaffagnini, Stefano, Samuelsson, Kristian, Sheean, Andrew, Burnham, Jeremy M., Smith, Clair, Herbst, Elmar, Pfeiffer, Thomas, Araujo, Paulo, Oostdyk, Alicia, Guenther, Daniel, Ohashi, Bruno, Irrgang, James J., Fu, Freddie H., Nagamune, Kouki, Kurosaka, Masahiro, Hoshino, Yuichi, Grassi, Alberto, Muccioli, Giulio Maria Marcheggiani, Lopomo, Nicola, Signorelli, Cecilia, Raggi, Federico, Senorski, Eric Hamrin, Sundemo, David, Bjoernsson, Haukur, Ahlden, Mattias, Desai, Neel, Karlsson, Jon, Musahl, Volker, Burnham, Jeremy, Lian, Jayson, Popchak, Adam, Svantesson, Eleonor, Kuroda, Ryosuke, Zaffagnini, Stefano, Samuelsson, Kristian, Sheean, Andrew, Burnham, Jeremy M., Smith, Clair, Herbst, Elmar, Pfeiffer, Thoma, Araujo, Paulo, Oostdyk, Alicia, Guenther, Daniel, Ohashi, Bruno, Irrgang, James J., Fu, Freddie H., Nagamune, Kouki, Kurosaka, Masahiro, Hoshino, Yuichi, Grassi, Alberto, Muccioli, Giulio Maria Marcheggiani, Lopomo, Nicola, Signorelli, Cecilia, Raggi, Federico, Senorski, Eric Hamrin, Sundemo, David, Bjoernsson, Haukur, Ahlden, Mattia, Desai, Neel, and Karlsson, Jon
- Subjects
Adult ,Joint Instability ,Male ,medicine.medical_specialty ,Translation ,Adolescent ,Knee Joint ,Rotation ,Anterior cruciate ligament ,Pivot shift ,Acceleration ,ACL ,Image analysis ,Inertial sensor ,Rotatory knee laxity ,Surgery ,Orthopedics and Sports Medicine ,03 medical and health sciences ,Young Adult ,0302 clinical medicine ,medicine ,Humans ,Prospective Studies ,Prospective cohort study ,Lateral meniscus ,Orthodontics ,030222 orthopedics ,Anterior Cruciate Ligament Reconstruction ,business.industry ,Anterior Cruciate Ligament Injuries ,030229 sport sciences ,musculoskeletal system ,Biomechanical Phenomena ,medicine.anatomical_structure ,surgical procedures, operative ,Knee laxity ,Orthopedic surgery ,Tears ,Female ,Image analysi ,business ,Medial meniscus ,human activities - Abstract
Purpose: Lateral compartment acceleration and translation have been used to quantify rotatory knee laxity in the setting of anterior cruciate ligament (ACL) injury; however, their relationship remains elusive. The purpose of this study was to examine the correlation between lateral compartment acceleration and translation during pivot shift testing. It was hypothesized that a correlation would exist in ACL-injured and uninjured knees, irrespective of sex, but would be greatest in knees with combined ACL and lateral meniscus tear. Methods: Seventy-seven patients (34 females, 25.2 ± 9.0years) undergoing primary single-bundle ACL reconstruction were prospectively enrolled in a 2-year study across four international centers. Patients underwent preoperative examination under anesthesia of the injured and uninjured knee using Image Analysis software and surface mounted accelerometer. Results: A moderate correlation between lateral compartment acceleration and translation was observed in ACL-injured knees [ρ = 0.36, p < 0.05), but not in uninjured knees (ρ = 0.17, not significant (n.s.)]. A moderate correlation between acceleration and translation was demonstrated in ACL-injured knees with lateral meniscus tears (ρ = 0.53, p < 0.05), but not in knees with isolated ACL-injury (ρ = 0.32, n.s.), ACL and medial meniscus tears (ρ = 0.14, n.s.), or ACL and combined medial and lateral meniscus tears (ρ = 0.40, n.s.). A moderate correlation between acceleration and translation was seen in males (ρ = 0.51, p < 0.05), but not in females (ρ = 0.21, n.s.). Largest correlations were observed in males with ACL and lateral meniscus tears (ρ = 0.75, p < 0.05). Conclusion: Lateral compartment acceleration and translation were moderately correlated in ACL-injured knees, but largely correlated in males with combined ACL and lateral meniscus tears. ACL and lateral meniscus injury in males might, therefore, be suspected when both lateral compartment acceleration and translation are elevated. Surgeons should have a greater degree of suspicion for high-grade rotatory knee laxity in ACL-injured males with concomitant lateral meniscus tears. Future studies should investigate how these two distinct components of rotatory knee laxity—lateral compartment acceleration and translation—are correlated with patient outcomes and affected by ACL surgery. Level of evidence: Prospective cohort study; Level of evidence II.
- Published
- 2018
11. Anatomic Anterior Cruciate Ligament Reconstruction Using Hamstring Tendons Restores Quantitative Pivot Shift
- Author
-
Zaffagnini, Stefano, primary, Signorelli, Cecilia, additional, Grassi, Alberto, additional, Hoshino, Yuichi, additional, Kuroda, Ryosuke, additional, de SA, Darren, additional, Sundemo, David, additional, Samuelsson, Kristian, additional, Musahl, Volker, additional, Karlsson, Jon, additional, Sheean, Andrew, additional, Burnham, Jeremy M., additional, Lian, Jayson, additional, Smith, Clair, additional, Popchak, Adam, additional, Herbst, Elmar, additional, Pfeiffer, Thomas, additional, Araujo, Paulo, additional, Oostdyk, Alicia, additional, Guenther, Daniel, additional, Ohashi, Bruno, additional, Irrgang, James J., additional, Fu, Freddie H., additional, Nagamune, Kouki, additional, Kurosaka, Masahiro, additional, Marcheggiani Muccioli, Giulio Maria, additional, Lopomo, Nicola, additional, Raggi, Federico, additional, Svantesson, Eleonor, additional, Hamrin Senorski, Eric, additional, Bjoernsson, Haukur, additional, Ahlden, Mattias, additional, and Desai, Neel, additional
- Published
- 2018
- Full Text
- View/download PDF
12. Erratum to: The pivot shift: a global user guide
- Author
-
Musahl, Volker, Hoshino, Yuichi, Ahlden, Mattias, Araujo, Paulo, Irrgang, James J., Zaffagnini, Stefano, Karlsson, Jon, and Fu, Freddie H.
- Published
- 2013
- Full Text
- View/download PDF
13. Erratum to: The pivot shift: a global user guide
- Author
-
Musahl, Volker, primary, Hoshino, Yuichi, additional, Ahlden, Mattias, additional, Araujo, Paulo, additional, Irrgang, James J., additional, Zaffagnini, Stefano, additional, Karlsson, Jon, additional, and Fu, Freddie H., additional
- Published
- 2012
- Full Text
- View/download PDF
14. Standardized pivot shift test improves measurement accuracy
- Author
-
Hoshino, Yuichi, primary, Araujo, Paulo, additional, Ahlden, Mattias, additional, Moore, Charity G., additional, Kuroda, Ryosuke, additional, Zaffagnini, Stefano, additional, Karlsson, Jon, additional, Fu, Freddie H., additional, and Musahl, Volker, additional
- Published
- 2011
- Full Text
- View/download PDF
15. Patient-Reported and Quantitative Outcomes of Anatomic Anterior Cruciate Ligament Reconstruction With Hamstring Tendon Autografts.
- Author
-
Diermeier T, Meredith SJ, Irrgang JJ, Zaffagnini S, Kuroda R, Hochino Y, Samuelsson K, Smith CN, Popchak A, Musahl V, Sheean A, Burnham JM, Lian J, Smith C, Popchak A, Herbst E, Pfeiffer T, Araujo P, Oostdyk A, Guenther D, Ohashi B, Irrgang JJ, Fu FH, Nagamune K, Kurosaka M, Kuroda R, Hochino Y, Grassi A, Muccioli GMM, Lopomo N, Signorelli C, Raggi F, Zaffagnini S, Horvath A, Svantesson E, Senorski EH, Sundemo D, Bjoernsson H, Ahlden M, Desai N, Samuelsson K, and Karlsson J
- Abstract
Background: The pivot-shift test has become more consistent and reliable and is a meaningful outcome measurement after anterior cruciate ligament reconstruction (ACLR)., Purpose/hypothesis: The purpose of this investigation was to assess patient-reported outcomes (PROs) and the quantitative pivot shift (QPS) preoperatively, at time zero immediately after anatomic ACLR, and after 24 months as well as the relationship between PROs and the QPS. It was hypothesized that anatomic ACLR would restore rotatory stability measured by the pivot-shift test and that QPS measurements would be positively correlated with PROs., Study Design: Cohort study; Level of evidence, 2., Methods: The ACL-injured and contralateral uninjured knees from 89 of 107 (83.2%) enrolled patients at 4 international centers were evaluated using a standardized pivot-shift test. Tibial acceleration was assessed with an inertial sensor, and lateral compartment translation was measured using an image analysis system preoperatively, at time zero immediately postoperatively, and at follow-up after 2 years. PROs were assessed at 12 and 24 months postoperatively with the International Knee Documentation Committee (IKDC) subjective knee form, Cincinnati Knee Rating System (CKRS), Marx activity rating scale, and activity of daily living score (ADLS)., Results: The mean patient age at surgery was 27 years (range, 15-45 years). A positive pivot shift preoperatively (side-to-side difference in tibial acceleration, 2.6 ± 4.0 m/s
2 ; side-to-side difference in anterior tibial translation, 2.0 ± 2.0 mm) was reduced at time zero postoperatively (side-to-side difference in tibial acceleration, -0.5 ± 1.3 m/s2 ; side-to-side difference in anterior tibial translation, -0.1 ± 1.0 mm). All PROs improved from preoperatively to final follow-up at 24 months: from 56.5 to 85.5 points for the IKDC ( P = .0001), from 28.8 to 32.4 points for the CKRS ( P = .04), from 11.2 to 7.9 points for the Marx ( P < .0001), and from 75.7 to 91.6 points for the ADLS ( P < .0001). Neither preoperative nor time zero postoperative rotatory laxity assessed by the pivot-shift test correlated with PROs at 24-month follow-up. A graft retear was observed in 4 patients (4.5%) within 2 years of follow-up., Conclusion: Anatomic ACLR resulted in significantly improved and acceptable PROs at 2-year follow-up and a low failure rate. Anatomic ACLR restored QPS measurements of anterior tibial translation and tibial acceleration to those of the contralateral knee immediately after surgery while still under anesthesia, but there was no correlation between the QPS preoperatively or at time zero after ACLR and PROs at 2-year follow-up., Competing Interests: One or more of the authors has declared the following potential conflict of interest or source of funding: This study was funded by an International Society for Arthoscopy, Knee Surgery and Orthopedic Sports Medicine/Orthopedic Research and Eduction Foundation research grant (No. 708661). J.J.I., Y.H., and V.M. are codevelopers of the image analysis system used in this study; at the moment, the system is not on the market and not producing revenue. R.K. has received grants from Smith & Nephew, Zimmer Biomet, Stryker, and Johnson & Johnson; consulting fees from Medacta, Arthrex, Japan Tissue Engineering, and Hirosaki Life Science Innovation; and speaking fees from Arthrex, Smith & Nephew, Zimmer Biomet, Johnson & Johnson, and Japan Tissue Engineering. V.M. has received consulting fees and speaking fees from Smith & Nephew. A.S. has received grant support from Arthrex and Stryker; educational support from Arthrex, Mid-Atlantic Surgical Systems, and Smith & Nephew; and hospitality payments from Stryker. J.M.B. has received grant support from Arthrex and educational support from Arthrex, Smith & Nephew, and Mid-Atlantic Surgical Systems. AOSSM checks author disclosures against the Open Payments Database (OPD). AOSSM has not conducted an independent investigation on the OPD and disclaims any liability or responsibility relating thereto., (© The Author(s) 2020.)- Published
- 2020
- Full Text
- View/download PDF
Catalog
Discovery Service for Jio Institute Digital Library
For full access to our library's resources, please sign in.