1.The patient, male, 58 years old, had recurrent pain and activity limitation in the left hip for 2 years, diagnosed as ischemic necrosis of the left femoral head, the effect of conservative treatment was not good, and the degree of femoral head necrosis was serious, so the left artificial total hip arthroplasty was performed, after the operation, the left hip was no longer painful, and the activity function improved significantly, the X-ray film was taken as follows: 2.The patient, female, 55 years old, had recurrent pain and activity limitation in the right hip for 5 years, diagnosed The patient was diagnosed with ischemic necrosis of the right femoral head. Considering that the degree of necrosis of the right femoral head was serious and the effect of conservative treatment was not good, the patient underwent “right total hip arthroplasty”, and the affected limb recovered well after surgery. fracture. Considering that the patient’s fracture end was obviously displaced and belonged to the head-down type fracture, the fracture end was severely damaged by blood flow, and the prognosis was poor; conservative treatment had a greater chance of producing ischemic necrosis of the femoral head or non-union of the fracture end, so “left total hip arthroplasty” was performed. X-rays were taken as follows: 4. The patient, 80 years old, had an accidental fall that caused pain and limited movement of the right hip for 2 weeks, and was diagnosed with a fracture of the right femoral neck. Considering that the fracture end was obviously displaced, and it was a head-down type with serious destruction of blood flow, the prognosis of conservative treatment was not good, and the old man was prone to complications such as decubitus ulcer, pneumonia and urinary tract infection after being bedridden for a long time. So we performed “right artificial femoral head replacement.” The postoperative situation recovered satisfactorily, and the postoperative radiographs are as follows: 5. The patient, female, 65 years old, had fallen accidentally and caused right hip pain and activity limitation for 10 days. She was given internal fixation surgery and recovered satisfactorily after surgery. Postoperative X-ray is as follows: Note: Elderly people with hip fractures (femoral neck fracture and intertrochanteric fracture) should be treated actively so that the injured limb can recover its function as soon as possible and move around on the ground as soon as possible. If conservative treatment is not taken blindly according to the actual situation, the patient is bedridden for a long time, which can bring some complications, such as decubitus ulcer, pneumonia, urinary tract infection, etc. These complications are often fatal to the frail elderly, and it is also difficult to take care of them normally. A patient, female, 90 years old, had an accidental fall resulting in an intercrural fracture, and was bedridden at home for 3 weeks, producing pressure sores in the lumbosacral region, with the following photographs.