29-year-old male with long history of sickle cell disease with crisis and known hip avascular necrosis now with increasing right hip pain and radiculopathy RIGHT HIP:ACETABULAR LABRUM: No significant abnormality noted.ARTICULAR CARTILAGE AND BONE: Patchy T2 signal within the superior aspect of the femoral head. Focal serpiginous low signal with osteochondral fragmentation along the superior aspect of the femoral head compatible with avascular necrosis. No cortical collapse is evident. SOFT TISSUES: No significant abnormality noted. ADDITIONAL
1.Avascular necrosis with fragmentation involving the right femoral head as described above.2.Edema within the left femoral head likely represent early avascular necrosis. 