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avascular necrosis (epidemology (international (incidance of prevalence…
avascular necrosis
definition
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bone then collaapse,destruction,pain&loss of joint function
epidemology
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Race
no racial predicetion except patient with sickle anemia &hemoglobin S and SC disease, which common occur in afrecan&mediterranan decent
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involves the epphysis of long bone such femoral head&humeral head&condyle,but the small bone can also affected