![]() Adult hip AVN can be caused by the use of chronic or high dose corticosteroids, alcoholism, sickle cell disease, trauma, work environments that expose the person to extreme barometric pressures, (e.g., Caisson’s disease), hyperlipidemia (increased blood lipid / fat levels), Gaucher disease and pancreatitis. The age of the affected person plays a critical role in the typical cause of the avascular necrosis and the prognosis of recovery. There are many causes of avascular necrosis of the femoral head. What causes avascular necrosis of the hip? This mismatch in joint shape leads to pain, irritation of the joint, loss of motion and function and eventual joint degeneration or arthritis. After the femoral head or joint has lost its original shape, then the joint does not fit together properly this is called a loss of joint congruency. Once the foundation’s stability is lost, then the entire structure can shift, break, collapse and lose the original shape of the structure. This can be compared to the settling or collapse of a foundation of a house or building. This causes weakness in the area of the AVN with eventual bony collapse and loss of strength and shape. Once the bone has died, there is a gradual process of bone breakdown and absorption by the body to repair the area. Reduction or restriction of blood (also known as ischemia) is more common in certain bones due to the underlying anatomy such areas include the femoral head, which is more predisposed to avascular necrosis. ![]() Healthy bone requires a continuous blood supply, just like other tissues and organs. Although bones appear to be a static frame for the body, the skeletal system is very biologically dynamic and full of ever-changing tissue. Without a blood supply, the bone cells die, and the surrounding bone loses its normal living environment. Share Tweet Email Print What is avascular necrosis (AVN) of the hip?Īvascular necrosis (AVN) of the hip, also referred to as osteonecrosis or aseptic necrosis, is a condition where the blood supply to the ball of the hip joint (femoral head) is lost, causing the bone to die.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |