| Content Provider | Springer Nature : BioMed Central |
|---|---|
| Author | Mauch, Marlene Ritzmann, Ramona Lambert, Christophe Wenning, Markus Ebner, Clara Hartl, Leonie Heitner, Albrecht H. Paul, Jochen Centner, Christoph |
| 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. |
| Related Links | https://bmcsportsscimedrehabil.biomedcentral.com/counter/pdf/10.1186/s13102-022-00531-0.pdf |
| Ending Page | 10 |
| Page Count | 10 |
| Starting Page | 1 |
| File Format | HTM / HTML |
| ISSN | 20521847 |
| DOI | 10.1186/s13102-022-00531-0 |
| Journal | BMC Sports Science, Medicine and Rehabilitation |
| Issue Number | 1 |
| Volume Number | 14 |
| Language | English |
| Publisher | BioMed Central |
| Publisher Date | 2022-07-19 |
| Access Restriction | Open |
| Subject Keyword | BMC Sports Science Medicine and Rehabilitation Sports Medicine Orthopedics Rehabilitation Medicine ACL revision ACL re-rupture Strength Pre-rehabilitation Isokinetic |
| Content Type | Text |
| Resource Type | Article |
| Subject | Physical Therapy, Sports Therapy and Rehabilitation Rehabilitation Orthopedics and Sports Medicine |
| Journal Impact Factor | 2.1/2023 |
| 5-Year Journal Impact Factor | 2.3/2023 |
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