He does not use any ambulatory aids. There is no history of trauma. Flexion 20 degrees, extension 5 degrees, internal rotation 5 degrees, external rotation 15 degrees. 4 out of 5 strength in all plains of motion. Negative straight leg raise test.
Knee is stable to exam.
The image will appear in a new window in your web browser. Make sure you close the image window when you are done with it. The history, clinical findings, and radiological images are consistent with avascular necrosis of the femoral head. Alcoholism is possibly a risk factor in the etiology of the disease. The radiological classification is a Ficat Stage III, Marcus and Enneking Stage III or Steinberg Stage III based on subchondral collapse producing a crescent sign but no deformation of the femoral head.