Factors Associated With Psychological Readiness to Return to Sports With Cutting, Pivoting, and Jump-Landings After Primary ACL Reconstruction.

In terms of the ACL-RSI score, a previous study evaluated groups divided into >90% and ≤90% of multiple lower- limb muscle function test LSIs, including anterior SLH, with results showing that there was no significant between-group difference at 8 months after primary ACL reconstruction, but the difference tended toward significance at 12 months. 4 The ACL-RSI score at the time of return was high when the range of increase in knee extension strength from before reconstruction to return to play was large. 15 A study of patients who returned to sports after a mean of 7 months after ACL reconstruction showed that those with a higher knee extension strength LSI at the time of return had higher ACL-RSI scores. 15 In the current study, knee flexion strength LSI at an angular velocity of 180 deg/s was not significantly related to ACL-RSI score in the multiple regression analysis.

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