Isolated hip external rotator strengthening was performed with patients seated at the edge of a treatment table and the knee flexed to 90° (FIGURE 3). A strap was used to stabilize the thigh to prevent sagittal and frontal plane hip motion. Elastic tubing was tied around the ankle and was secured to a rigid pole. The tubing length for hip external rotation strengthening was individualized across patients based on their thigh length (distance from anterior superior iliac spine to medial femoral epicondyle). The distance between the exercise limb and the pole was adjusted to remove slack from the tubing. The exercise was performed by externally rotating the hip to approximately 30°.