Thirty-eight patients (fifty-four hips) with developmental dysplasia of the hip were randomized to proximal iliopsoas tenotomy at the pelvic brim (n=27 hips) or distal tenotomy just above the lesser trochanter (n=27 hips); all procedures used an anterior approach. The primary outcome was hip-flexion strength (Medical Research Council scale). Secondary outcomes included intraoperative bleeding, fem...