Talk:Dysbaric osteonecrosis

Material from "Decompression sickness"
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 * Even when the change in pressure causes no immediate symptoms, rapid pressure change can cause permanent bone injury called dysbaric osteonecrosis (DON) "bone cell death from pressure changes". DON can develop from a single exposure to rapid decompression. DON often affects the humerus and femoral heads and can be diagnosed from lesions visible in X-ray images of the bones. Unfortunately, X-rays appear normal for at least three months after the permanent damage has occurred; it may take four years after the damage has occurred for its effects to become visible in the X-ray images.

User comments transferred from the article:
From my experience and knowledge for Military Mixed Gas, Saturation and commercial deep sea divers its imperative to have long bone x-rays prior to becoming a saturation, Mixed Gas or commercial diver and if suffer the bends Doppler tests for the blood flow should be done. I am only the 2nd US Navy deep sea diver ever diagnosed with this rare and very disabling disease. Again, I cannot express how disabling this disease is.

From the beginning of the diagnosis till present day the prognosis isn't good. It generally is a bilateral disease, and the symptoms are difficult to deal with. Even if this type of bends is treated and Doppler tests are not done, the condition worsens. It can also be a delayed condition meaning, it may take six months till three years for the condition to show up. My symptoms took 2 years and six months to show up after my last deep dives.

These comments provided by User:Deepseakelly