”Individualized treatment” Selecting different surgical procedures for hip fractures (PCCP minimally invasive internal fixation, limited incision plate screw internal fixation, intramedullary fixation) according to patient characteristics (age, physical condition, fracture condition, etc.); selective hip preservation surgical treatment for femoral neck fractures, femoral head necrosis, artificial joint replacement treatment (early femoral head necrosis decompression, bone grafting).