What Causes Aseptic Necrosis?

Aseptic necrosis is a serious disorder where bone tissue does not receive an adequate blood supply. Bone tissue is living tissue and needs the oxygen and nutrients that the blood brings. Without it, bone begins to die. Minuscule cracks can start to appear in the bone, and over time the cracks widen, and the bone can collapse. The symptoms of aseptic necrosis can be silent in the early stages. In later stages, the patient feels pain when they try to put weight on their bone, and after time the bone starts to hurt even when they are at rest. The most common sites for aseptic necrosis are the bones around the hip, the thigh, shoulder, hand, foot or knee. In some people, bone necrosis is bilateral, which means it can involve bones in both feet or both hips. The causes of aseptic necrosis are as follows.

Damage To The Blood Vessels

Injury to a bone can cause damage to the blood vessels that serve the bone. Blood vessels are often damaged if a person breaks their arm or leg, for example. The injury does not even have to be that dramatic. Blunt force trauma around a bone can also damage blood vessels in the area and impair their ability to deliver blood to the bone. Another type of damage to the blood vessels happens with alcoholism. Years of heavy drinking can set up plaque in the lining of the blood vessels and make them less able to bring blood to the bones in the area.

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