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Cause Of Blackening Or Avascular Necrosis Of The Femoral Head

Avascular necrosis is caused by disruption of blood flow to the bone. Without blood flow, bone cells die and eventually the bone joint is destroyed, which over time can lead to arthritis. Avascular necrosis or osteonecrosis can occur in any bone but most commonly affects the femoral head.
Although the underlying cause of poor blood flow to the bones is not fully understood, but factors such as pelvic fractures and hip dislocations can damage blood vessels and impair blood flow to the femur; Excessive alcohol consumption, long-term use of corticosteroids are risk factors for avascular necrosis too.

Blackening Femoral Head

Treatment Of Aavascular Necrosis

Although non-surgical treatments such as medications can relieve pain and slow the progression of avascular necrosis, surgery is the best way to treat this complication.

Creating A Bone Tunnel

The bone tunneling procedure is performed by making a large hole or several small holes in the head of the femur. This reduces the pressure on the bone and also creates a channel for new blood vessels to feed the damaged parts of the pelvic joint.

Bone Deformation (Osteotomy)

Bone Graft

In the bone grafting method, a part of the thin bone of the foot with its arteries is grafted to the head and neck of the femur, which will heal the affected area.

Bone Deformation (Osteotomy)

In osteotomy, part of the bone is removed to remove weight from the damaged bone or joint.

Complete Joint Replacement

If avascular necrosis has caused complete destruction of the femoral head, the best treatment is complete replacement of the pelvic joint, which replaces the damaged joint and bone with artificial prostheses.