Knee extension range of motion and self-report physical function in total knee arthroplasty: mediating effects of knee extensor strength

摘要

BackgroundKnee extensor strength and knee extension range of motion (ROM) are important predictors of physical function in patients with a total knee arthroplasty (TKA). However, the relationship between the two knee measures remains unclear. The purpose of this study was to examine whether changes in knee extensor strength mediate the association between changes in knee extension ROM and self-report physical function.