Fig. 4From: Unilateral premature osteoarthritis of the hip with excessive anteversion of the femoral neck developing in the early second decade: two surgical casesRadiography AP view (a: preoperation, b: postoperation, c: 1 year after surgery, d: 1.5 years after surgery). a: Irregularity of the left anterolateral femoral head and a subcartilaginous cyst are seen. Lateral center-edge, Tonnis, and Sharp’s angles (lt/rt) were 25/25, 10/10, and 45/45 degrees, respectively. There were no signs of femoroacetabular impingement. b: Immediately after surgery. c: 1 year after surgery. Joint space narrowing and femoral head osteosclerosis improved, and there was improved hip conformity. d: 1.5 years after surgery. Implant removalBack to article page