Source of Support: None, Conflict of Interest: None
Twenty cases of corticosteroid induced hip arthropathy and avascular necrosis of femoral head affecting 37 femoral heads were studied. There were 18 males and 2 females. Affection was bilateral in 17 and unilateral in 3 cases. There was an interval of 4-5 months between the consumption of cortisone and the onset of symptoms of arthropathy. All these patients were young. The condition was severely painful and disabling with marked restriction of movement of hip especially flexion, adduction and rotation. Conservative treatment gave the best results, in comparison with surgical procedure. Non-traumatic systemic fat embolism originating from a cystic fatty liver induced by corticosteroids seems to be an acceptable hypothesis for the development of mechanical vascular obstruction and ischaemia resulting in avascular necrosis of femoral head.