Influence of Femoral Anteversion on Knee Valgus Angle during Unanticipated Side-step Cutting Motion

Abstract

[Purpose] The purpose of this study was to examine the influence of femoral anteversion on the lower limb, trunk, and pelvis joint angles and muscle activities during unanticipated cutting motion. [Participants and Methods] The subjects were 15 female athletes. Femoral anteversion was measured by Craig’s test. The motion task was an unanticipated cutting motion. The joint angles and muscle activities were measured using a three-dimensional motion analysis system and surface electromyography. The correlation coefficient between each measurement and femoral anteversion was calculated. [Results] The mean value of femoral anteversion was 11.9 ± 2.6˚. A significant negative correlation was found between femoral anteversion and the peak and excursion of the knee valgus angle. [Conclusion] The relationship between femoral anteversion and the knee valgus angle in this study was different from that reported in a previous study. The knee valgus angle may be affected by task differences.