Based on a literature review of hip osteoarthritis MRI findings, eight features were identified (12 (link), 13 ), to reflect process cardinal to hip joint osteoarthritis, and most optimally evaluated by MR imaging: (i) articular cartilage loss, (ii) bone marrow edema pattern, (iii) subchondral cysts, (iv) labral abnormality, (v) paralabral cysts, (vi) intraarticular bodies, (vii) effusion/synovitis and (viii) ligamentum teres abnormality. Features that were excluded include (i) OA features that were better evaluated on radiograph such as osteophytes, subchondral sclerosis and bone attrition, (ii) features that may have association with hip OA, however, may also be present without OA, such as (a) femoral head/neck junction bump, (b) synovial herniation pit or fibrocystic change, (c) acetabular overcoverage and (d) acetabular undercoverage, and (iii) features that did not show significant relationship with OA such as greater trochanter tendinopathy.