Osteonecrosis is a common complication after steroid treatment for various etiologies more frequently affecting the hip, but also the humeral head, the knee, and the ankle joints [1]. Due to the insidious onset of the bone infarcts, osteonecrosis may initially run asymptomatic for a varied period. Lesions become painful when the articular surface collapses, gradually leading to joint destruction that necessitates total joint replacement. Early diagnosis is of paramount importance, especially in the younger patients, where the lifetime risk of revision is considerably increased [2].
