Osteonecrosis of acetabulum following total hip arthroplasty; a case report and literature review

Introduction Osteonecrosis of bone, a complex process of bone resorption and formation, is characterized by necrosis of bone cells1. There are numerous etiologies and risk factors nominated for this situation. Vascular interruption, thrombotic occlusion, and extravascular compression lead to decreased blood flow, and the reason will be avascular necrosis (AVN) of bone1. Intracapsular or extracapsular hip fractures, hip dislocations, sickle cell anemia, coagulation factor anomalies, corticosteroids, alcohol, pregnancy, radiation, bone marrow transplant, Hyperlipidemia, hyperuricemia, pancreatitis, leukemia or lymphoma, hypertriglyceridemia, and dysbaric situation are the risk factors of AVN1–6. The incidence of AVN in the general population is uncertain and was not assessed well in risk groups7.Although osteonecrosis of the femoral head (ONFH) has been studied, the literature is so far sparse on osteonecrosis of the acetabulum (ONA). Here, we aim to report on a case of ONA.