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What is avascular necrosis (AVN)?

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Avascular necrosis (AVN), also called osteonecrosis, aseptic necrosis, or ischemic bone necrosis, is a condition that happens when there's loss of blood to the bone. Because bone is living tissue that needs blood, an interruption to the blood supply causes bone to die. If it's not stopped, this eventually makes the bone collapse.

Avascular necrosis most commonly happens in your hip. Other common areas are the shoulder, knees, shoulder, and ankles.

SOURCES:

National Osteonecrosis Foundation: "Osteonecrosis."

MedlinePlus.gov: "Osteonecrosis."

Penn State Hershey Medical Center: "Avascular Necrosis."

DukeHealth.org: "Free Vascularized Fibular Graft."

Reviewed by Brunilda Nazario on September 18, 2019

SOURCES:

National Osteonecrosis Foundation: "Osteonecrosis."

MedlinePlus.gov: "Osteonecrosis."

Penn State Hershey Medical Center: "Avascular Necrosis."

DukeHealth.org: "Free Vascularized Fibular Graft."

Reviewed by Brunilda Nazario on September 18, 2019

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Can a dislocated hip cause avascular necrosis (AVN)?

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