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Doctor insights on: Osteonecrosis Bones

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Why the bone appers white in talar osteonecrosis x-rays and not black?

Why the bone appers white in talar osteonecrosis x-rays and not black?

Density: It has to do with the "bad" bone being more dense than the healthy bone. X-rays see calcium so there is more dense calcium and hence appears whiter. ...Read more

Dr. Pietro Seni
215 doctors shared insights

Avascular Necrosis (Definition)

Also known as osteonecrosis, avascular necrosis is the death of bone from interruption of blood supply. This can result in tiny bone fractures and eventual destruction of the entire bone. It can be caused by trauma, blockage of circulation with lipids in the blood, certain diseases like sickle cell disease, Gaucher, and occasionally after exposure to corticosteroids. Sometimes, there ...Read more


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I have osteonecrosis in my hip. I also have bone spurs on my spine, middle back pain, curved spine & osteoporosis. What are my expected treatments?

I have osteonecrosis in my hip. I also have bone spurs on my spine, middle back pain, curved spine & osteoporosis. What are my expected treatments?

Total hip: You will need to have a total hip replacement for the hip osteonecrosis.Osteoporosis need to be treated with the proper medicines(biphosphonates, orally o parentally.Parathyroid hormone subcutaneosly and vit d4000u daily.You will find out that after the total hip the back pain will improve and good pt program to strenghtening the core muscles will olso help with the back pain. ...Read more

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I need bisophanates but am so frightened of the side effects of osteonecrosis of the jaw, thrombosis, stroke, bone cancer etc etc how common are these?

I need bisophanates but am so frightened of the side effects of osteonecrosis of the jaw, thrombosis, stroke, bone cancer etc etc how common are these?

Not so common: And much less common than the dread complications of osteoporosis. I'm not impressed with what i've read about the stroke or cancer risk; good oral hygiene and early recognition should help with the uncommon jaw osteonecrosis. Would like to hear from others about what they've decided. ...Read more

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Who (orthopedic surgeons or podiatrist) does vascularized bone grafts for osteonecrosis of the talus-in denver, chicago, st. Louis or kansas areas?

Ask: I would start with the physician that gave you the diagnosis. He/she is likely able to help you find someone that does even if not in your area. ...Read more

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In which bones can you get avascular necrosis?

In which bones can you get avascular necrosis?

All of them: Virtually all bones can get avn (avascular necrosis). Usually avn occurs at the ends of bones, at the joint. ...Read more

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If a sesamoid bone undergoes avascular necrosis, will the bond then be reabsorbed by the body?

If a sesamoid bone undergoes avascular necrosis, will the bond then be reabsorbed by the body?

Let me explain: Avascular necrosis (and avn) is a disease where there is cellular death (necrosis) of bone components due to interruption of the blood supply.] without blood, the bone tissue dies and the bone collapses. If avascular necrosis involves the bones of a joint, it often leads to destruction of the bone, the bone will there but deformed. ...Read more

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Are early cystic changes on navicular bone many months post injury a sign of avascular necrosis?

Are early cystic changes on navicular bone many months post injury a sign of avascular necrosis?

Cysts in bone: Cystic changes or erosions in bone post trauma can indicate that the bone matrix was disrupted from the injury and cystic changes have resulted. It does not mean that you have avascular necrosis, but it can mean that there are changes in the trabecular patterns of the bone due to the trauma. Bone injuries can cause many different bone patterns to occur as a result of the bone trying to heal itsel ...Read more

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What are the differences between bone marrow edema and avascular necrosis?

What are the differences between bone marrow edema and avascular necrosis?

Bone marrow: edema is a nonspecific finding which can be seen with almost any pathologic process involving bone. Avascular necrosis is a specific pathologic process relating to bone infarction due to vascular compromise. Marrow edema can be seen with avascular necrosis. ...Read more

Dr. William Singer
77 doctors shared insights

Aseptic Necrosis (Definition)

Aseptic necrosis is also called osteonecrosis, avascular necrosis (AVN), or ischemic bone necrosis. It is a condition that occurs when there is diminished blood to the bone. An interruption to the blood supply causes bone to die. If the environment is not altered or improved, the involved bone may eventually collapse and ...Read more


Bone (Definition)

Bone is a living growing tissue made mostly of collagen (protein that provides soft framework) & the mineral calcium phosphate that adds strength & hardens the framework. Two types of bone are found in the body; cortical (dense compact outer layer) & trabecular (makes up inner layer, ...Read more