Table 3.

Factors associated with the achievement of symmetrical (LSI ≥ 90%) isokinetic quadriceps muscle strength after ACL reconstruction in multivariate logistic regression analysis (n = 4093 Patients)

Factor	Regression coefficient (ß)	SE	O.R. (95% CI)	P value
Age ≥ 30 years	− 0.73	0.07	0.47 (0.41–0.55)	< 0.001*
Female gender	− 0.22	0.06	0.80 (0.70–0.91)	0.001*
Delayed (> 3 months) ACLR	0.05	0.09	1.05 (0.87–1.26)	ns
Pre-injury Tegner activity level ≥ 6	− 0.06	0.11	0.93 (0.75–1.16)	ns
HT autograft	1.22	0.16	3.41 (2.48–4.69)	< 0.001*
MM resection	− 0.16	0.10	0.84 (0.69–1.02)	ns
MM repair	− 0.49	0.16	0.60 (0.43–0.84)	0.003*
LM resection	− 0.05	0.09	0.94 (0.78–1.14)	ns
LM repair	− 0.48	0.18	0.61 (0.42–0.89)	0.01*
Cartilage injury	− 0.09	0.09	0.91 (0.76–1.09)	ns

LSI limb symmetry index, ACL anterior cruciate ligament, ACLR anterior cruciate ligament reconstruction, HT hamstring tendon, MM medial meniscus, LM lateral meniscus, SE standard error, OR odds ratio, CI confidence interval

*Statistically significant. P value < 0.05