Fig. 8

a Coronal PD fat sat images show femoral AVN in association with joint effusion and synovial thickening (small red arrow). There is also edema in the adductor muscle group (large green arrow). b Coronal T1 fat sat images in the same patient as (a) shows synovial thickening and enhancement after contrast injection (red arrow). c Axial oblique PD fat sat images in another patient shows edema in the pectineus muscle and also inferior capsule of the hip joint (green arrow).