The correct application of crutches 1, the choice of crutches crutches is a fracture patient out of bed support tools, patients and their relatives and friends to choose good quality, strong armrests, adjustable height, crutches with non-slip device at the head of the lightweight crutches, usually the best aluminum products. In the process of education, the department spare a pair of crutches, used to explain the function and meaning of each part, and debug the height of the method to ensure the safety of patients with crutches. 2. The principle and timing of walking with crutches Walking with crutches is an important part of functional exercise for patients with lower limb fractures, so the timing of walking with crutches is very important. The best time to get off the ground is when the bone scab is forming. During this period, the local pain disappears, the swelling subsides, the soft tissues are repaired, the fracture end is initially stabilized, and the internal and external bone scabs have started to form, especially when the patient has been exercising in bed for a few weeks, the muscles contract strongly, and the affected limb does not tremble when the ankle joint is dorsally extended, then the patient can start to walk with the crutches out of bed. The method of holding the crutches is important for the healing of the fracture, so the nursing staff should demonstrate the method of holding the crutches on site. The height of the crutches should be adjusted according to the patient’s height, and the general height is that the patient holds the crutches with both hands, with the top of the crutches 5-10 cm from the armpit and the same width as the shoulder. Because the force of the crutches in both hands rather than the armpit to support the body, otherwise it is easy to cause brachial plexus nerve palsy, once it occurs, although rest can be recovered, but will affect the patient’s mood and the process of functional exercise. 4, the gait of the crutch The gait of the crutch is the focus of education, in order to achieve a safe and free walking exercise, simple explanation of the patient can not understand and master, but also have concerns, so the nursing staff demonstration of the gait of the crutch until the patient mastered, for children should also teach parents. When walking with crutches, first ask the patient to stand in a good posture, so that the feet and the head of the crutches is isosceles triangle, first step on the affected limb, the tip of the foot should not exceed the line of the head of the crutches, stand smoothly, hands supporting the crutches at the same time the healthy limb forward to move 30cm, stand stable and lift the affected limb, while lifting the crutches forward to move the same distance, the foot and the head of the crutches land at the same time, but the tip of the foot still falls within the line of the head of the crutches, so gradually move forward. Patients should have nursing staff on-site guidance and protection when walking with crutches for the first time out of bed, some patients have too large a stride, the center of gravity shifted back, easy to fall, timely adjustment, so that the patient in the process of exercise full of confidence, for the special psychological characteristics of children, in the process of using crutches are to have medical staff or relatives supervision, to overcome the arbitrariness and blindness. 5. Principles of crutches 5.1 Principles of crutches: All patients with lower extremity fractures who start to leave the bed after the scab formation period should support the crutches and walk without weight or light weight. If the fracture is in the upper femur, the affected limb should be kept in 30° of abduction when walking with the crutches, and the affected limb should be kept in a neutral position when walking with the crutches for the lower femur and calf fractures. The pace should not be too large, the speed should not be too fast, not more than 25 steps per minute, and the fracture of both lower limbs should leave the bed when the fracture reaches the clinical healing period, generally in about 8 weeks, and it is better to have external fixation protection when moving to the ground. 5.2 Principle of using single crutch: After the clinical healing period of lower limb fracture, the walking exercise can be changed from double crutch to single crutch. The principle is: the upper middle femoral stem, lower femoral segment or calf fracture with mild outward angulation, should go to the affected side of the crutch first, in order to keep the affected limb abducted during walking, correct and prevent the angle from increasing, this is because the upper middle femoral segment fracture has a tendency to outward angulation, other cases should go to the healthy side of the crutch first. 6. Abandonment of crutches Patients with lower limb fractures use crutches temporarily and should abandon them in time after the fracture heals. However, in practice, it is found that some patients abandon the crutches too early, resulting in fracture deformity or even plate bending or breaking, which affects the patient’s recovery and even requires re-operation. Some patients have concerns about fracture healing and do not dare to give up the abduction, which can cause imbalance in the force of both lower limbs and is not conducive to the rehabilitation of the affected limbs after a long time. The principle of abandoning the crutches is to achieve bony healing of the fracture.