O-leg external fixation surgery takes about one to two hours, depending on the patient’s condition. If the patient’s O-leg symptoms are mild and the correction difficulty is small, it will take about one hour to finish the surgery; if the patient’s O-leg symptoms are more serious and the correction difficulty is large, it will take about two hours to finish the surgery. After the surgery, patients should pay attention to personal care, do not touch the wound with your hands to avoid bacterial infection, and pay attention to a light diet, balanced nutrition, eat more food rich in protein and vitamins, and eat less cold and greasy food. Patients need to go to the hospital for regular checkups after the surgery, and should consult a doctor immediately if there is any abnormal condition.