What does the term "avascular necrosis" refer to?

The term "avascular necrosis" specifically refers to the death of bone tissue due to a lack of blood supply. When the blood flow to a bone is interrupted or diminished, the cells within that bone begin to die, leading to the deterioration of the overall bone structure. This condition can result from various factors, including trauma, prolonged use of certain medications, excessive alcohol consumption, or systemic diseases that affect blood circulation.

Understanding the mechanism behind avascular necrosis is critical for recognizing how it can lead to significant pain and potentially debilitating conditions, such as osteoarthritis or joint collapse, if not diagnosed and treated properly. Early intervention can be essential in preventing permanent damage to the affected bone and associated joints.