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Table 3 Comparison of the static and dynamic postural stability and the knee muscle strength between involved and uninvolved side knees in each group

From: Poorer dynamic postural stability in patients with anterior cruciate ligament rupture combined with lateral meniscus tear than in those with medial meniscus tear

 ACL rupture combined with MM tearACL rupture combined with LM tear
Involved kneeUninvolved kneep valueInvolved kneeUninvolved kneep value
Static OSI1.7 ± 1.01.6 ± 0.70.2371.8 ± 0.91.6 ± 0.40.102
 MD (95% CI)−0.1 (− 0.3, 0.1) − 0.2 (− 0.5, 0) 
Static APSI1.3 ± 0.91.2 ± 0.60.2261.4 ± 0.81.3 ± 0.60.250
 MD (95% CI)− 0.1 (− 0.3, 0.1)−0.1 (− 0.4, 0.1) 
Static MLSI1.2 ± 0.91.1 ± 0.70.3851.2 ± 0.81.0 ± 0.50.217
 MD (95% CI)− 0.1 (− 0.3, 0.1) − 0.2 (− 0.4, 0.1) 
Dynamic OSI1.6 ± 0.51.7 ± 0.60.2372.0 ± 0.81.8 ± 0.60.100
 MD (95% CI)0.1 (− 0.1, 0.3) − 0.2 (− 0.6, 0.1) 
Dynamic APSI1.3 ± 0.51.3 ± 0.50.8271.5 ± 0.61.3 ± 0.60.166
 MD (95% CI)0 (− 0.2, 0.2) −0.2 (− 0.5, 0.1) 
Dynamic MLSI0.9 ± 0.41.0 ± 0.50.4081.0 ± 0.50.9 ± 0.40.205
 MD (95% CI)0.1 (−0.1, 0.3) −0.1 (− 0.4, 0.1) 
Quadriceps strength109 ± 44.1200 ± 40.1< 0.001a111 ± 42.4202 ± 38.9< 0.001a
 MD (95% CI)91 (78.3, 105.1) 91 (79.3, 103.9) 
Hamstring strength49 ± 27.2100 ± 21.9< 0.001a61 ± 31.6110 ± 27.2< 0.001a
 MD (95% CI)51 (42.9, 58.8) 49 (37.9, 61.2) 
  1. Values expressed as mean ± standard deviation
  2. Measurement unit of postural stability and knee muscle strength was degrees and Newton meter per kilogram, respectively
  3. 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
  4. aStatistically significant