Purpose: To validate and assess the cross-sectional adaptation of the modified Cincinnati knee rating system (MCRKS) Persian translation.
Methods: To assess test-pretest reliability, 102 participants were asked to fill out the MCRKS (Per) scale after anterior cruciate ligament (ACL) reconstruction surgery. Internal consistency (Cronbach's ), reliability (intraclass correlation coefficients), construct validity (Pearson's ) and sensitivity (floor/ceiling effect) were determined.