Guideline for Diagnostic and Treatment of Osteonecrosis of the Femoral Head

There is a new knowledge for clinical presentations and findings of imagine in patients with osteonecrosis of the femoral head ( ONFH ) in recent more than ten years. According to clinical data in C hinese huge patients with ONFH , the guideline for diagnosis and treatment of ONFH has been put forward by C hinese specialists. The newer contents of guideline include the definition for predisposing risk factors of ONFH , the new knowledge for clinical manifestations, the new interpretation for changes of imagine, important differential diagnosis. Based on the supplementary and revision for widely used staging and classification system, the new C hinese staging and classification system have been established. The advantages of C hinese staging and classification system accord with clinical and pathological features, it could be predicted the prognosis, and clinical applications are convenient. The guideline gives a brief account of principles for treatment selection and treatment methods for enhancement of diagnosis and treatment for ONFH .