You should not sit up immediately after surgery. If your condition is mild, you can try to sit up after 1 to 3 days, but if your condition is severe, you need to delay for 2 to 3 weeks. Intertrochanteric femur fracture is one of the more common fractures in the elderly, and it is important not to sit up immediately after surgery because of anesthesia and other reasons. If the fracture is mild, the internal fixation is secure, the fracture is in good alignment, and the surgery is successful, you can try to sit up 1 to 3 days after the surgery. If the fracture is more serious, such as a comminuted fracture, or accompanied by osteoporosis or other diseases, and the internal fixation is not very secure, the sitting up should be delayed, and it may take 2 to 3 weeks after the operation. Whether a fracture of the intertrochanteric femur can sit up after surgery should be judged and decided by the doctor according to the severity of the disease.