Pre-operative knee extensor and flexor torque after secondary ACL rupture: a comparative retrospective analysis
Abstract Background Secondary anterior cruciate ligament (ACL) ruptures are a relevant clinical concern after surgical treatment of a primary ACL rupture. However, there is a lack of scientific evidence related to the role of muscle strength prior to revision surgery in a second ACL rupture. The aim...
| Main Authors: | , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
BMC
2022-07-01
|
| Series: | BMC Sports Science, Medicine and Rehabilitation |
| Subjects: | |
| Online Access: | https://doi.org/10.1186/s13102-022-00531-0 |
| _version_ | 1818509765084446720 |
|---|---|
| author | Marlene Mauch Ramona Ritzmann Christophe Lambert Markus Wenning Clara Ebner Leonie Hartl Albrecht H. Heitner Jochen Paul Christoph Centner |
| author_facet | Marlene Mauch Ramona Ritzmann Christophe Lambert Markus Wenning Clara Ebner Leonie Hartl Albrecht H. Heitner Jochen Paul Christoph Centner |
| author_sort | Marlene Mauch |
| collection | DOAJ |
| description | Abstract Background Secondary anterior cruciate ligament (ACL) ruptures are a relevant clinical concern after surgical treatment of a primary ACL rupture. However, there is a lack of scientific evidence related to the role of muscle strength prior to revision surgery in a second ACL rupture. The aim of this study was to assess differences in knee extensor and flexor strength in patients before primary and secondary ACL reconstruction compared to healthy controls. Methods In total, n = 69 age, weight and sex matched individuals were included in the study: n = 23 patients with isolated primary ACL rupture, n = 23 with secondary ACL rupture, and n = 23 matched healthy controls. Maximal isokinetic knee extension and flexion torque normalized to body mass was assessed for both legs. Results For patients with secondary ACL ruptures, torques were reduced in the non-injured (extension: 1.94 Nm/kg vs. 2.46 Nm/kg, p < 0.05, flexion: 1.25 Nm/kg vs. 1.59 Nm/kg, p < 0.05) and the injured leg (extension: 1.70 Nm/kg vs. 2.46 Nm/kg, p < 0.05, flexion: 1.14 Nm/kg vs. 1.59 Nm/kg, p < 0.05) compared to healthy controls. For patients with a primary ACL rupture torques were reduced in the non-injured (extension: 1.92 Nm/kg vs. 2.46 Nm/kg, p < 0.05, flexion: 1.24 Nm/kg vs. 1.59 Nm/kg, p < 0.05) and the injured leg (extension: 1.38 Nm/kg vs. 2.46 Nm/kg, p < 0.05, flexion: 1.01 Nm/kg vs. 1.59 Nm/kg, p < 0.05) compared to healthy controls. There were no differences between patients with primary and secondary ruptures, except of the knee extension on the injured leg showing higher values after a secondary ACL rupture (1.38 Nm/kg vs. 1.70 Nm/kg, p < 0.05). Conclusions The findings indicate that maximal knee torques were significantly reduced in patients with primary and secondary ACL ruptures before surgical reconstruction for the non-injured and injured leg as compared to healthy controls. Further investigations are needed to assess strength abilities before and after a second revision within a prospective design. |
| first_indexed | 2024-12-10T22:49:52Z |
| format | Article |
| id | doaj.art-a2f7506ef1af4d97857c1734162f57fa |
| institution | Directory Open Access Journal |
| issn | 2052-1847 |
| language | English |
| last_indexed | 2024-12-10T22:49:52Z |
| publishDate | 2022-07-01 |
| publisher | BMC |
| record_format | Article |
| series | BMC Sports Science, Medicine and Rehabilitation |
| spelling | doaj.art-a2f7506ef1af4d97857c1734162f57fa2022-12-22T01:30:28ZengBMCBMC Sports Science, Medicine and Rehabilitation2052-18472022-07-0114111010.1186/s13102-022-00531-0Pre-operative knee extensor and flexor torque after secondary ACL rupture: a comparative retrospective analysisMarlene Mauch0Ramona Ritzmann1Christophe Lambert2Markus Wenning3Clara Ebner4Leonie Hartl5Albrecht H. Heitner6Jochen Paul7Christoph Centner8RennbahnklinikRennbahnklinikDepartment of Trauma and Orthopaedic Surgery, University of Witten/Herdecke, Cologne Merheim Medical CentreDepartment of Orthopedic and Trauma Surgery, Medical Faculty, University Medical Center, University of FreiburgDepartment of Sport and Sport Science, University of FreiburgDepartment of Sport and Sport Science, University of FreiburgRennbahnklinikRennbahnklinikRennbahnklinikAbstract Background Secondary anterior cruciate ligament (ACL) ruptures are a relevant clinical concern after surgical treatment of a primary ACL rupture. However, there is a lack of scientific evidence related to the role of muscle strength prior to revision surgery in a second ACL rupture. The aim of this study was to assess differences in knee extensor and flexor strength in patients before primary and secondary ACL reconstruction compared to healthy controls. Methods In total, n = 69 age, weight and sex matched individuals were included in the study: n = 23 patients with isolated primary ACL rupture, n = 23 with secondary ACL rupture, and n = 23 matched healthy controls. Maximal isokinetic knee extension and flexion torque normalized to body mass was assessed for both legs. Results For patients with secondary ACL ruptures, torques were reduced in the non-injured (extension: 1.94 Nm/kg vs. 2.46 Nm/kg, p < 0.05, flexion: 1.25 Nm/kg vs. 1.59 Nm/kg, p < 0.05) and the injured leg (extension: 1.70 Nm/kg vs. 2.46 Nm/kg, p < 0.05, flexion: 1.14 Nm/kg vs. 1.59 Nm/kg, p < 0.05) compared to healthy controls. For patients with a primary ACL rupture torques were reduced in the non-injured (extension: 1.92 Nm/kg vs. 2.46 Nm/kg, p < 0.05, flexion: 1.24 Nm/kg vs. 1.59 Nm/kg, p < 0.05) and the injured leg (extension: 1.38 Nm/kg vs. 2.46 Nm/kg, p < 0.05, flexion: 1.01 Nm/kg vs. 1.59 Nm/kg, p < 0.05) compared to healthy controls. There were no differences between patients with primary and secondary ruptures, except of the knee extension on the injured leg showing higher values after a secondary ACL rupture (1.38 Nm/kg vs. 1.70 Nm/kg, p < 0.05). Conclusions The findings indicate that maximal knee torques were significantly reduced in patients with primary and secondary ACL ruptures before surgical reconstruction for the non-injured and injured leg as compared to healthy controls. Further investigations are needed to assess strength abilities before and after a second revision within a prospective design.https://doi.org/10.1186/s13102-022-00531-0ACL revisionACL re-ruptureStrengthPre-rehabilitationIsokinetic |
| spellingShingle | Marlene Mauch Ramona Ritzmann Christophe Lambert Markus Wenning Clara Ebner Leonie Hartl Albrecht H. Heitner Jochen Paul Christoph Centner Pre-operative knee extensor and flexor torque after secondary ACL rupture: a comparative retrospective analysis BMC Sports Science, Medicine and Rehabilitation ACL revision ACL re-rupture Strength Pre-rehabilitation Isokinetic |
| title | Pre-operative knee extensor and flexor torque after secondary ACL rupture: a comparative retrospective analysis |
| title_full | Pre-operative knee extensor and flexor torque after secondary ACL rupture: a comparative retrospective analysis |
| title_fullStr | Pre-operative knee extensor and flexor torque after secondary ACL rupture: a comparative retrospective analysis |
| title_full_unstemmed | Pre-operative knee extensor and flexor torque after secondary ACL rupture: a comparative retrospective analysis |
| title_short | Pre-operative knee extensor and flexor torque after secondary ACL rupture: a comparative retrospective analysis |
| title_sort | pre operative knee extensor and flexor torque after secondary acl rupture a comparative retrospective analysis |
| topic | ACL revision ACL re-rupture Strength Pre-rehabilitation Isokinetic |
| url | https://doi.org/10.1186/s13102-022-00531-0 |
| work_keys_str_mv | AT marlenemauch preoperativekneeextensorandflexortorqueaftersecondaryaclruptureacomparativeretrospectiveanalysis AT ramonaritzmann preoperativekneeextensorandflexortorqueaftersecondaryaclruptureacomparativeretrospectiveanalysis AT christophelambert preoperativekneeextensorandflexortorqueaftersecondaryaclruptureacomparativeretrospectiveanalysis AT markuswenning preoperativekneeextensorandflexortorqueaftersecondaryaclruptureacomparativeretrospectiveanalysis AT claraebner preoperativekneeextensorandflexortorqueaftersecondaryaclruptureacomparativeretrospectiveanalysis AT leoniehartl preoperativekneeextensorandflexortorqueaftersecondaryaclruptureacomparativeretrospectiveanalysis AT albrechthheitner preoperativekneeextensorandflexortorqueaftersecondaryaclruptureacomparativeretrospectiveanalysis AT jochenpaul preoperativekneeextensorandflexortorqueaftersecondaryaclruptureacomparativeretrospectiveanalysis AT christophcentner preoperativekneeextensorandflexortorqueaftersecondaryaclruptureacomparativeretrospectiveanalysis |