Description
We aimed to systematically review 1) whether knee flexor strength recovers after ACL reconstruction with HT autografts, and 2) whether it influences the association with a second ACL injury. A third aim was to summarize the methodology used to assess knee flexor strength. There was fair quality of evidence indicating that the recovery of knee flexor strength LSI, defined as ≥ 90% of the uninjured side, takes up to 2 years after ACL reconstruction with HT autografts. Whether knee flexor strength deficits influence the association of second ACL injuries is still uncertain. There was considerable heterogeneity in the methodology used for knee flexor strength assessment, which, together with the fair quality of included studies, warrants further caution in the interpretation of our results.