Female 18 years old Reason: Evaluate the progression of hip AVN History: Chronic Hip Pain Femoral heads are well seated in normal acetabula. Again seen are oblong cystic areas, the largest of which is 5 mm, in the medial left femoral head. Areas of low T2 and T1 signal predominantly in the posterior femoral heads bilaterally do not enhance and are consistent with osteonecrosis. No significant edema in the femoral heads bilaterally. No flattening of the femoral heads. No fracture or joint effusion. The labrum and cartilage are intact.Unchanged abnormal signal in the proximal femoral diaphyses bilaterally consistent with bone infarcts, right worse than left. Abnormal bone marrow signal throughout the femurs and pelvis compatible with red marrow conversion in setting of sickle cell disease. Central vertebral body depression of the lower lumbar spine from sickle cell disease.Subcutaneous edema posterior to the to the lower lumbar spinous processes. Atrophy/increased fat in the paraspinal musculature.
1.Bilateral avascular necrosis of the femoral head without collapse or fracture. 2.Bone infarcts of the proximal femoral diaphysis.