Avascular Necrosis

Avascular necrosis (AVN), also known as osteonecrosis, is a condition where a part of the bone tissue dies due to an interrupted blood supply to that area. Without adequate blood supply, the cells in the bone do not receive the necessary oxygen and nutrients, leading to damage of the bone tissue.

This process can ultimately lead to pain, restricted movement and, in severe cases, the joint may lose its function due to the damage.

In AVN, the femoral head can become unstable, causing pain with movement and weight-bearing. If the condition is not treated promptly, it can lead to severe joint damage, ultimately resulting in the need for a hip arthroplasty.

How does avascular necrosis develop?

The condition often occurs in the hip, particularly in the femoral head, but can also affect other joints. Risk factors for avascular necrosis include:

• Trauma (such as a hip fracture)
• Long-term use of corticosteroids
• Alcohol consumption
• Certain medical conditions
• High blood pressure or diabetes

With osteonecrosis or avascular necrosis, pain is usually experienced when:

• Getting in or out of a car
• Putting on and taking off shoes and socks
• Standing up after prolonged sitting
• Deep hip flexion
• Hip rotations
• Impact sports, deep bending movements and changes of direction
• Walking
• Squatting
• …

With the right treatment and self-care measures, symptoms can often be well managed, allowing for a good quality of active life. If symptoms persist, an injection may be administered, or surgery may be necessary.

If AVN is advanced, a total hip arthroplasty may be necessary.

We will discuss with you which treatment option is most suitable based on your specific situation and needs.