The main risk factors are bone fractures, joint<unk> s, alcoholism, and the use of high-dose steroids. Other risk factors include radiation therapy, chemotherapy, and organ transplantation. Osteonecrosis is also associated with cancer, lupus, sickle cell disease, HIV infection, Gaucher's disease, and Caisson disease (dysbaric osteonecrosis). The condition may also occur without any clear reason. Bisphosphonates are associated with osteonecrosis of the mandible. Prolonged, repeated exposure to high pressures (as experienced by commercial and military divers) has been linked to AVN, though the relationship is not well understood. In children, avascular osteonecrosis can have several causes. It can occur in the hip as part of Legg–Calvé–Perthes syndrome, and it can also occur as a result after malignancy treatment such as acute lymphoblastic leukemia and allotransplantation.
complications of Hip dislocation
complications of Patellar dislocation
complications of Hip dysplasia
complications of Osteomyelitis
complications of Bunion
complications of Repetitive strain injury
medical cause of Osteoarthritis
medical cause of Sciatica