Legg-Calve-Perthes Disease 


What is Osteonecrosis?Osteonecrosis literally means “dead bone.” It most often refers to a form of arthritis in which one of the bones of a joint is affected by osteonecrosis, leading to arthritis in the joint. Osteonecrosis is known by many other names, such as avascular necrosis or ischemic necrosis. Osteonecrosis occurs because of a decrease in blood supply to specific parts of bones. This decreased circulation causes cells in the bone and bone marrow to begin to die. ...

Avascular necrosis is a disease resulting from the temporary or permanent loss of the blood supply to the bones. Without blood, the bone tissue dies and causes the bone to collapse. If the process involves the bones near a joint, it often leads to collapse of the joint surface. This disease also is known as osteonecrosis, aseptic necrosis, and ischemic bone necrosis.

Osteonecrosis as related to Avascular Necrosis