Purpose: To support weight and increase range of motion and self-care. For post-operative patients with orthopedic lower extremity or gait instability dysfunction. Usage: good foot up stairs, bad foot down stairs, four-point gait, three-point gait, two-point gait. Notes: 1, the length of the crutches grasp height minus 40cm, the length of the walker to the elbow joint bending 15-30 ° or so; 2, the top of the crutches from the armpit two horizontal fingers, walker elbow bending 30 ° when the elbow is weighted; 3, the height of the crutch handle to the elbow joint bending 30 °, the walker handle suitable for grip and both sides of the walker and the hip the same height; 4, the top of the crutches and ground contact preferably with 5, carefully check the rubber head and screws for looseness and damage before use, and pay attention to timely repair; 6, avoid walking in places prone to falls such as low light and wet ground; 7, avoid long clothes, slippers or high heels when using crutches or walkers; 8, it is best to have medical staff on hand to guide the first use of crutches or walkers after surgery; 9, the amount of activity should be gradually increased.