Table 6 Knee flexor strength for patients sustaining second ACL injuries
Studies | Ipsilateral/contralateral injury, n | Timepoint of assessment (months) | Time at RTS (months) | Time of injury after ACL reconstruction (months) | Group | Knee flexor strength, LSI (%) | Absolute knee flexor strength values (Nm) | HQ-strength ratio, mean ± SD |
|---|---|---|---|---|---|---|---|---|
Blucher et al. 2022 [28] | 19/0 | 12 | 12 (70%) | 23 (13–36) | Second ACL injury, n = 19 | 93.6% ± 9.4% (60°/s) 92.2% ± 16.0% (180°/s) | – | – |
No Second ACL injury, n = 191 | 90.1% ± 19.4% (60°/s) 91.4% ± 16.2% (180°/s) | |||||||
Severyns et al. 2022 [78] | 11/0 | 6 | 61 | 11.5 (7–19) | Second ACL injury, n = 11 | 71.6% ± 10.9% (60°/s) 88.4% ± 15.5% (180°/s) | 66.1 ± 26.2 61.2 ± 24.2 | – |
No second ACL injury, n = 93 | 95.0% ± 17.5% (60°/s) 92.1% ± 20.7% (180°/s) | 94.1 ± 32.4 72.6 ± 28.4 | ||||||
Tanaka et al. 2010 [83] | 6/0 | 6 | 9.8 | 11.7 (8.0–15.7) | Second ACL injury, n = 6 | 90.9% ± 13.7% | 63.7 ± 25.5 | 51.8% ± 8.0% |
No second ACL injury, n = 58 | 87.0% ± 17.5% | 55.8 ± 15.7 | 53.2% ± 15.5% | |||||
Yamanashi et al. 2019 A [89] 2 | 27/9 | 3 | 6–121 | Missing | Second ACL injury, n = 14 | – | 81.7 ± 16.4 | 43.0% ± 8.0% |
No second ACL injury, n = 131 | 77.2 ± 64.2 | 48.6% ± 11.6% | ||||||
Yamanashi et al. 2019 B [89] 2 | 27/9 | 6 | 6–121 | Missing | Second ACL injury, n = 12 | – | 81.6 ± 18.9 | 40.3% ± 7.0% |
No second ACL injury, n = 115 | 88.3 ± 22.1 | 50.8% ± 11.4% |