Diagnosis of Aseptic Osteonecrosis of the Femoral Head (AONTH)

Aseptic osteonecrosis is a frequent pathology. It corresponds to epiphyseal bone necrosis, secondary ischemic and/or cytotoxic mechanisms. not specific disease, but rather the final outcome of various pathological situations in which there disturbance intraosseous circulation femoral head. This explains usual names avascular necrosis or aseptic necrosis. may be unilateral, bilateral multifocal. More than 75% involve Many risk factors must considered, such as corticosteroid therapy, alcoholism, dyslipidemia sickle cell disease. important diagnose potentially reversible stages condition that all more disabling because it affects young adult, middle an active life, presence pain groin crease man who tends take steroids, when head still spherical on standard radiography. Magnetic resonance imaging has profoundly changed our diagnostic possibilities, showing pathognomonic signs while radiograph normal. (AONTH) often poses problem differential diagnosis with other coxopathies, source delay medical practice.