What is Avascular Necrosis of Hip Joint?
Avascular necrosis is the death of bone tissue (femoral head) in the hip due to lack of blood supply. This can ultimately lead to destruction of the hip joint and arthritis. Although avascular necrosis can occur in any bone but hip joint is the most commonly affected by it.
Causes of Avascular Necrosis of Hip joint
It occurs due to disrupted blood supply to the femoral head due to any of the following:
Disorders like sickle cell
Decreased hemoglobin or oxygen carrying component of blood
Symptoms of Avascular Necrosis of Hip Joint
Osteonecrosis develops in stages and may vary from several months to over a year. It causes following symptoms:
The first symptom is hip pain
Followed by a dull ache or throbbing pain in the groin or buttock area
Difficulty standing and putting weight on the affected hip
Painful movement of the hip joint
Management of Avascular Necrosis
The early stages of avascular necrosis can be very well managed byCore decompressiondue to smooth and round surface of the head. But severe cases of avascular necrosis can only be managed by the total hip replacement surgery.
This procedure involves removal of dead and degenerated bone tissue so that new and healthy tissue may grow. Through an incision on the side of the thigh, a guide wire is inserted against the degenerated femur. One larger hole or several smaller holes are made into the femoral head to relieve pressure in the bone and create channels for new blood vessels to nourish the affected areas of the hip.
The core decompression can be combined with bone grafting to help regenerate healthy bone and support cartilage at the hip joint. Bone grafting is the transplantation of the healthy bone tissue (from patients own body or from donor or from cadaver or a synthetic bone graft) to an area of the body where it is needed.