Isolated hip abductor strengthening was performed as patients stood on both feet, with elastic tubing tied just above the ankle at one end and attached to a rigid pole at the other (FIGURE 2). The tubing length for hip abduction was individualized across patients based on their lower limb length (distance from anterior superior iliac spine to medial malleolus). The distance between the exercise limb and the pole was adjusted to remove slack from the tubing. The patients were allowed to hold on to a pole for balance during the exercise. The exercise was performed by abducting the hip to approximately 30°, while keeping the pelvis level.