Avascular necrosis of bone with hemiparesis: a rare presentation of primary antiphospholipid antibody syndrome

Vascular complications are well known manifestations of primary antiphospholipid antibody syndrome but the concurrent existence of avascular necrosis of bone and stroke due to vasculitic infarct is a very rare presentation. We report a case of a middle-aged man who presented with right knee pain and left hemiparesis and was subsequently diagnosed to have primary antiphospholipid antibody syndrome.