9 doctors weighed in:

What is avascular necrosis of hip and knee?

9 doctors weighed in
Nicole Bressler
Emergency Medicine
5 doctors agree

In brief: Bone Destruction

Avascular necrosis means there is no blood getting to a particular body part.
Our body parts need blood to survive, including bones (bones are living tissue). Necrosis refers to the dying of cells that make up that body part. Avascular necrosis of the hip & knee means there is no blood getting to them & they are being destroyed.

In brief: Bone Destruction

Avascular necrosis means there is no blood getting to a particular body part.
Our body parts need blood to survive, including bones (bones are living tissue). Necrosis refers to the dying of cells that make up that body part. Avascular necrosis of the hip & knee means there is no blood getting to them & they are being destroyed.
Nicole Bressler
Nicole Bressler
Answer assisted by Nicole Bressler, Medical Student
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Dr. David Rosenfeld
Pain Management
2 doctors agree

In brief: Bone death

Avn is caused by a disrupted blood supply to the bone.
Bone is living tissue. Without a proper blood supply it dies.

In brief: Bone death

Avn is caused by a disrupted blood supply to the bone.
Bone is living tissue. Without a proper blood supply it dies.
Dr. David Rosenfeld
Dr. David Rosenfeld
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Dr. Pietro Seni
Orthopedic Surgery
2 doctors agree

In brief: Usually is dead bone

Avascular necrosis occur when the ciculation to a particular area of the bone is interrupted.
Must common areas are the hip joint(the ball) and the knee.However can occur in any bone that the blood supply have being interrupted.Usual culprits are trauma(fractures or dislocations)diseases such as sicle cell .Dr p seni.

In brief: Usually is dead bone

Avascular necrosis occur when the ciculation to a particular area of the bone is interrupted.
Must common areas are the hip joint(the ball) and the knee.However can occur in any bone that the blood supply have being interrupted.Usual culprits are trauma(fractures or dislocations)diseases such as sicle cell .Dr p seni.
Dr. Pietro Seni
Dr. Pietro Seni
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Dr. Bernard Bach Jr
Orthopedic Surgery

In brief: Lack of blood supply

When the bones that form the joint lose their blood supply, for one reason or another, that is called avascular necrosis.

In brief: Lack of blood supply

When the bones that form the joint lose their blood supply, for one reason or another, that is called avascular necrosis.
Dr. Bernard Bach Jr
Dr. Bernard Bach Jr
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Christopher Breen
General Practice

In brief: Bone death

Avascular necrosis is when the bone is no longer receiving adequate blood supply, usually due to a fracture injuring the blood vessels.
When this occurs, the bone dies. This is common with hip fractures and once this occurs; the hip needs to be replaced. I'm sure this can occur with the knee but it is much less common.

In brief: Bone death

Avascular necrosis is when the bone is no longer receiving adequate blood supply, usually due to a fracture injuring the blood vessels.
When this occurs, the bone dies. This is common with hip fractures and once this occurs; the hip needs to be replaced. I'm sure this can occur with the knee but it is much less common.
Christopher Breen
Christopher Breen
Answer assisted by Christopher Breen, Medical Student
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1 comment
Dr. Richard Orr
It can also occur in young athletic types for no known reason. (Remember Bo Jackson) and if it occurs in children it is calleg Legg-Perthes disease.
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