After orthopedic surgery, drugs are given by subcutaneous injection, intramuscular injection or intravenous drip, often involving the following drugs: first, prophylactic antibiotics, for larger surgeries, those involving joints, and longer surgeries, 24-hour prophylactic antibiotic treatment is given to prevent secondary infections. Second, analgesic drugs, such as intramuscular dulcolax, morphine, or intravenous flurbiprofen, can be given to relieve postoperative pain and prevent excessive stress reactions due to severe pain, which can affect the health of the body. Third, medications to support symptomatic treatment, perioperative patients may be fasted from water and given fluids through the intravenous route to replenish the amount of fluids, including crystals and colloids. Fourth, if the elderly suffer from other underlying diseases, medications to improve blood supply and promote fracture healing may be given for treatment. For lower limb surgery requiring long-term bed braking, subcutaneous injection of low-molecular heparin calcium should be given to prevent blood clots in the lower limbs.