Avascular Necrosis Topic Guide
Avascular Necrosis: Avascular necrosis (aseptic necrosis or osteonecrosis) is a death of bone, which leads to destruction of the adjacent joint. Causes include fracture, dislocation, steroid medication usage, and excessive alcohol consumption. Risk factors include smoking, pregnancy, radiation therapy and chemotherapy, bone marrow and blood diseases, and the bends. Pain is the main symptom. Treatment involves treating the underlying cause of avascular necrosis and surgery.
Magnetic Resonance Imaging (MRI) Magnetic resonance imaging (MRI) is a scanner that takes cross-sectional images of the body. It is used to evaluate tissues of the head, neck, chest, limbs, abdomen, and pelvis. MRI is a very safe procedure; sedation may be used for infants, small children, or adults who are claustrophobic.