pete is a 250 lb man that played 15 years of professional football. pete quit football at that age of 38 when his hips and knees became too painful to play. he has tried to manage the pain with otc anti-inflammatory drugs for the past 20 years. now 58 years old, pete has a severe limp on his right side and gone to the doctor in hopes to get stronger pain medication. his general doctor orders x-rays, which reveal bilateral narrowing of both hip and knee joints. the right acetabulum shows bony projections extending toward the femoral head.