67-year-old female with left hip pain, only temporary relief from injection x2. ACETABULAR LABRUM: The acetabular labrum cannot be well-visualized likely secondary to underlying degenerative changes as described below.ARTICULAR CARTILAGE AND BONE: There is marked bone marrow edema within the left acetabulum and femoral head with associated partial collapse of the femoral head. On the sagittal sequences there is a 'double line' sign within the femoral head which is convincing evidence of underlying avascular necrosis. There are secondary osteoarthritic changes related to the aforementioned avascular necrosis and femoral head collapse with associated joint space narrowing.SOFT TISSUES: No significant abnormality noted. ADDITIONAL
Findings compatible with avascular necrosis of the left femoral head with associated partial collapse and secondary osteoarthritic changes as described above.