MRI pelvis and left hip:
Non-contrast study. Images are markedly degraded by motion artefact due to leg spasms and pain. As such, the sequences were also abbreviated.
Abnormal low T1 and high T2 signal within the subchondral weight-bearing aspect of the left femoral head. Although there is some linear low signal at the margin, there is no evidence of subchondral collapse. Abnormality involves approximately 20% of the entire articular surface and more than 50% of the weight-bearing surface of the femoral head.
A moderate joint effusion is also present on this side. Loss of cartilage superiorly with small osteophytes indicates early osteoarthritis.
The right hip is grossly unremarkable.
Findings are consistent with avascular necrosis of the left femoral head without subchondral collapse but with early osteoarthritis.