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The primary outcome contains pain at 1 month, 3 months and 6 months and hip function at 1 month, 3 months and 6 months. Secondary outcome includes the life quality, mortality rate, complications such as deep venous thrombosis, pulmonary embolism. Comparison of outcome indicators in 2 groups after conservative treatment or surgical treatment (Table). The current trial will offer better evidence for the future treatment selection for Garden 1 FNFs for patients older than 75years old. researchregistry6147. researchregistry6147. Ethylene diamine tetra-acetic ac