Coronal acquisitions demonstrate superolateral migration of the right femoral head with narrowing of the right hip joint space. The right femoral head is flattened with an irregular cortical outline and cartilage erosions. The opposing articular surface of the right acetabulum also shows irregular cortical outlines. STIR hyperintense and T1W hypointense signals are seen in the right femoral head, neck and proximal shaft as well as in the right acetabulum and surrounding hip muscles. T1W hypointense and T2W hyperintense reticular or lace-like patterns are seen in the subcutaneous fat at the lateral aspect of the right hip.
Mild to moderate heterogeneous enhancement of the bone marrow of the right femoral head, neck and proximal shaft as well as the right acetabulum is noted. Peripherally enhancing collections are likewise noted in the right hip joint space and the surrounding muscular (specifically the right gluteus minimus and medius, proximal right vastus lateralis, tensor fascia lata and rectus femoris as well as the distal iliopsoas and pectineus muscles) and subcutaneous soft tissues. Reticular or lace-like pattern of enhancement is seen in the subcutaneous fat at the lateral aspect of the right hip with overlying skin thickening.