What Is Avascular Necrosis?
Avascular necrosis (AVN), also called osteonecrosis, is a condition in which bone tissue dies because of a loss of blood supply. Without adequate circulation, the affected bone gradually weakens and may eventually collapse, causing severe pain, joint damage, and arthritis.
Avascular necrosis most commonly affects the hip but may also occur in the shoulder, knee, ankle, or other joints.
Why Avascular Necrosis Matters
If left untreated, avascular necrosis can lead to permanent joint damage and loss of mobility. Early diagnosis improves the chances of preserving the joint and delaying or preventing joint replacement surgery.
Common Causes and Risk Factors
- Bone fractures or joint injuries
- Long-term corticosteroid use
- Excessive alcohol consumption
- Sickle cell disease
- Lupus
- Cancer treatments
- Organ transplantation
- Certain blood clotting disorders
Common Symptoms
- Joint pain during activity
- Pain at rest as the condition progresses
- Limited range of motion
- Limping
- Increasing stiffness
- Difficulty walking
How Is Avascular Necrosis Diagnosed?
Healthcare providers diagnose avascular necrosis using a physical examination, X-rays, MRI, CT scans, bone scans, and other imaging studies. MRI is especially useful for detecting early disease.
How Is Avascular Necrosis Treated?
Treatment depends on the stage of the disease and may include activity modification, medications for pain relief, physical therapy, reduced weight-bearing, core decompression surgery, bone grafting, or total joint replacement.
How Home Care Can Help
Home care professionals assist with mobility, fall prevention, rehabilitation exercises, medication reminders, safe transfers, and daily activities while helping individuals maintain independence and protect the affected joint.
Home Care Tip
Using assistive devices such as a cane or walker, when recommended, can reduce stress on the affected joint and help prevent further damage.
Frequently Asked Questions About Avascular Necrosis
Can avascular necrosis be cured?
Early treatment may slow progression and preserve the joint, but advanced cases often require joint replacement surgery.
Who is most likely to develop avascular necrosis?
People with significant joint injuries, long-term corticosteroid use, excessive alcohol use, or certain medical conditions have a higher risk.
Can home care help someone with avascular necrosis?
Yes. Home care professionals support safe mobility, rehabilitation, pain management strategies, and daily activities while helping reduce the risk of falls.
When to Contact Your Healthcare Provider
Contact your healthcare provider if joint pain becomes progressively worse, you develop increasing difficulty walking, or your mobility declines despite treatment.