Avascular necrosis occurs when blood flow is hindered due to a fracture or joint dislocation. Lack of blood supply to a joint is called ostenecrosis. Over time this can lead to the eventual collapse of the bone. Alcohol abusers or patients on high doses of steroids are also at risk for developing avascular necrosis otherwise known as AVN. The hip joint is most commonly affected by AVN. Symptoms may include decrease range of motion and hip pain that may radiate into the groin area. Symptoms may occur suddenly if caused by an injury. Otherwise most patients pain levels increase over time. In some cases, patients may not experience any symptoms at all. Avascular necrosis occurs when there is lack of or limited blood flow to a a bone. If left untreated lack of nutrients and oxygen will cause the bone to deteriorate. Medications and surgeries may be used to slow down this process, but ultimately extreme cases require a hip replacement.
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