Established avascular necrosis of the right femoral head with marked collapse. Secondary degenerative change of the superior acetabulum with subcortical marrow oedema present. There is a large right hip joint effusion with synovial thickening and internal debris.
There is also avascular necrosis of the left femoral head without collapse characterised by serpiginous high T2/low T1 hypointensity within the femoral head.