Avascular Necrosis (Bone Infarction)

About- Avascular necrosis (AVN) also called osteonecrosis, aseptic necrosis, ischemic bone necrosis, or bone infarction is the death of bone tissue due to a lack of blood supply, which can lead to tiny breaks in the bone and the bone's eventual collapse
 
Symptoms-
The hip bone is the most commonly affected joint with AVN. Other affected areas are knee, shoulder, wrist, ankle, hands, and feet. The most common symptoms are
 Hip pain
 Dull ache or throbbing pain in the groin or buttock area
 Difficult to stand and put weight on the affected hip
 Moving the hip joint is painful 

Causes-

An injury that slows or stops blood flow to a bone such as Hip dislocations, hip fractures,
 Excessive Alcoholism
 Smoking
 High doses of corticosteroids for a long time
 Childhood diseases including Legg-Calve Perthes disease
 Other medical condition including Caisson disease (diver's disease or "the bends"), sickle cell disease, myeloproliferative disorders, Gaucher's disease, systemic lupus erythematosus, Crohn's disease, arterial embolism, deep vein thrombosis, and vasculitis etc 
 
Specialists to Visit

 Orthopaedic Surgeon
 Rheumatologist

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References-
https://www.mayoclinic.org
https://en.wikipedia.org
https://www.healthline.com
https://orthoinfo.aaos.org
https://www.emedicinehealth.com
https://www.webmd.com

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