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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. ...

----A joint is the location at which two bones make contact. Structurally, the joints are classified as:*fibrous - bones are connected by fibrous connective tissue.*cartilaginous - bones are connected by cartilage.*synovial - there is a space (synovial cavity) between the articulating bones.Functionally, they can be classified as:*synarthrosis - permit no movement.*amphiarthrosis - permit little movement.*diarthrosis - permit a variety of movements (e.g. flexion, adduction, pronation). ...


Osteonecrosis as related to Joints