63-year-old female with worsening left hip pain, radiograph with evidence of osteonecrosis, history of steroid use ACETABULAR LABRUM: The acetabular labrum appears within normal limits for nonarthrographic technique.ARTICULAR CARTILAGE AND BONE: Mixed T2 signal in the superior aspect of the left femoral head with marked decreased T1 signal in a serpentine pattern compatible with avascular necrosis. No collapse of the cortex or articular cartilage. The geographic territory of the affected area appears similar to the sclerotic region seen on prior radiograph.Susceptibility artifact from metallic right total hip arthroplasty device is noted.SOFT TISSUES: No significant abnormality noted. ADDITIONAL
Avascular necrosis of the left femoral head without evidence of advanced collapse as described above.