HIP ROTATION RANGE OF MOTION AND ITS IMPACT ON LOWER LIMB ALIGNMENT ON LANDING

The purpose of the present study was to compare lower limb alignment at initial ground contact between groups with normal and abnormal hip rotation range of motion. Male (n=8) and female (n=8) subjects performed an maximal drop jump diagonal side cut task ten to the left and ten to the right. Lower limb alignment was assessed through knee angle, hip angle, ankle angle, thigh rotation and shank rotation at initial foot contact. One significant difference was reported between groups for the knee angle variable on the non dominant side. This indicates that the only the knee angle variable is affected by unbalanced hip rotation range of motion and on the non-dominant side.