Table 3.
Comparison of the static and dynamic postural stability and the knee muscle strength between involved and uninvolved side knees in each group
| ACL rupture combined with MM tear | ACL rupture combined with LM tear | |||||
|---|---|---|---|---|---|---|
| Involved knee | Uninvolved knee | p value | Involved knee | Uninvolved knee | p value | |
| Static OSI | 1.7 ± 1.0 | 1.6 ± 0.7 | 0.237 | 1.8 ± 0.9 | 1.6 ± 0.4 | 0.102 |
| MD (95% CI) | −0.1 (− 0.3, 0.1) | − 0.2 (− 0.5, 0) | ||||
| Static APSI | 1.3 ± 0.9 | 1.2 ± 0.6 | 0.226 | 1.4 ± 0.8 | 1.3 ± 0.6 | 0.250 |
| MD (95% CI) | − 0.1 (− 0.3, 0.1) | −0.1 (− 0.4, 0.1) | ||||
| Static MLSI | 1.2 ± 0.9 | 1.1 ± 0.7 | 0.385 | 1.2 ± 0.8 | 1.0 ± 0.5 | 0.217 |
| MD (95% CI) | − 0.1 (− 0.3, 0.1) | − 0.2 (− 0.4, 0.1) | ||||
| Dynamic OSI | 1.6 ± 0.5 | 1.7 ± 0.6 | 0.237 | 2.0 ± 0.8 | 1.8 ± 0.6 | 0.100 |
| MD (95% CI) | 0.1 (− 0.1, 0.3) | − 0.2 (− 0.6, 0.1) | ||||
| Dynamic APSI | 1.3 ± 0.5 | 1.3 ± 0.5 | 0.827 | 1.5 ± 0.6 | 1.3 ± 0.6 | 0.166 |
| MD (95% CI) | 0 (− 0.2, 0.2) | −0.2 (− 0.5, 0.1) | ||||
| Dynamic MLSI | 0.9 ± 0.4 | 1.0 ± 0.5 | 0.408 | 1.0 ± 0.5 | 0.9 ± 0.4 | 0.205 |
| MD (95% CI) | 0.1 (−0.1, 0.3) | −0.1 (− 0.4, 0.1) | ||||
| Quadriceps strength | 109 ± 44.1 | 200 ± 40.1 | < 0.001a | 111 ± 42.4 | 202 ± 38.9 | < 0.001a |
| MD (95% CI) | 91 (78.3, 105.1) | 91 (79.3, 103.9) | ||||
| Hamstring strength | 49 ± 27.2 | 100 ± 21.9 | < 0.001a | 61 ± 31.6 | 110 ± 27.2 | < 0.001a |
| MD (95% CI) | 51 (42.9, 58.8) | 49 (37.9, 61.2) | ||||
Values expressed as mean ± standard deviation
Measurement unit of postural stability and knee muscle strength was degrees and Newton meter per kilogram, respectively
ACL anterior cruciate ligament, APSI anterior–posterior stability index, CI confidence interval, LM lateral meniscus, MD mean difference, MLSI medial–lateral stability index, MM medial meniscus, OSI overall stability index
aStatistically significant