What Is Avascular Necrosis?
Article Sources
- 1. Avascular necrosis. (2020, April 22). Retrieved from https://www.mayoclinic.org/diseases-conditions/avascular-necrosis/symptoms-causes/syc-20369859
- 2. Avascular Necrosis. (n.d.). Retrieved October 21, 2020, from https://www.hopkinsmedicine.org/health/conditions-and-diseases/avascular-necrosis
- 3. Osteonecrosis of the Hip - OrthoInfo - AAOS. (n.d.). Retrieved October 21, 2020, from https://orthoinfo.aaos.org/en/diseases--conditions/osteonecrosis-of-the-hip
2. What Causes Avascular Necrosis?
Avascular necrosis occurs when something disrupts the flow of blood to a bone. It is not always possible to determine the cause of the disrupted blood flow. Idiopathic AVN, or necrosis that occurs without a known cause, occurs in approximately 25% of cases.1Avascular necrosis. (2020, April 22). Retrieved from https://www.mayoclinic.org/diseases-conditions/avascular-necrosis/symptoms-causes/syc-20369859
Sometimes the diminished blood supply is the result of an underlying medical condition, such as Gaucher’s disease or sickle-cell anemia. Another common cause of AVN is damage to the blood vessels from traumatic injury to the bone.2Avascular Necrosis. (n.d.). Retrieved October 21, 2020, from https://www.hopkinsmedicine.org/health/conditions-and-diseases/avascular-necrosis The buildup of fatty deposits in the cardiovascular system can cut off blood supply to the bone by blocking small blood vessels.
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