The heel bone is the largest appendage in the foot bone and is the most common of all tarsal fractures, accounting for approximately 60% of all tarsal fractures. Most of these fractures are caused by vertical impact on the heel when the foot falls from a height and lands. Most of the fractures involve the subtalar articular surface and have a poor prognosis and high disability rate. Treatment】 1. Indications for non-surgical treatment: Heel fracture with insignificant displacement, fracture displacement <2mm; fracture with posterior articular surface still attached to the ramus fracture block; fracture time within 5 days after injury; severe open fracture. (1) Wrap the injured foot with an elastic bandage and elevate the affected limb. Encourage early initiation of functional movement of the affected limb and weight bearing with crutches. (2) Bone traction treatment of the heel node under continuous traction, according to the principle of early activity. (3) Manipulation reset, foot plantarflexion so that the broken face position, with a plaster boot fixed in mild plantarflexion position for 4 to 6 weeks. (2) Indications for prying and repositioning: fractures in which the fracture block is separated from the talonavicular process; fracture lines that do not cross or compress the posterior articular surface; avulsion fractures of the posterior tuberosity of the heel. 3, incision and reinstallation of internal fixation (1) Indications: uneven articular surface, step >1mm; significant heel length shortening; heel width increase >lcm; heel height decrease more than 1.5cm; Bohler angle <15°. (2) Main surgical methods: plate screw internal fixation, inferior talar joint fusion, bone grafting, etc. Rehabilitation techniques】 1. Day 1 after surgery Patients were not given external fixation in plaster after surgery, elevated the affected limb, and performed isometric contraction exercises of gastrocnemius and tibialis anterior muscles. 2. On the second day after surgery, perform ankle flexion and extension activities, 80 to 100 times a day, in 2 stages, one in the morning and one in the afternoon. Ankle flexion and extension should be done mainly as an active exercise, supplemented by passive exercise. Do not exert too much force during exercise to prevent sports injury. As the early postoperative period (24 hours after surgery to wound removal) is the most obvious period of local inflammatory reaction, in order to reduce wound redness, swelling and exudation, local wound UV irradiation treatment can be given at the same time, using a level of erythema (2-3MED) irradiation, the frequency of treatment is once every other day, undo the dressing gauze before irradiation to reveal the wound l2, after the completion of irradiation routine disinfection and drug change. 3. Day 3 after surgery Start functional training of continuous passive flexion and extension of the ankle joint on the CPM machine. Firstly, start from a painless or slightly painful angle, the range of motion depends on the patient's pain tolerance level, and the general range of motion is between one 25° and 0° (0° is neutral position, dorsiflexion is positive, plantarflexion is negative). The entire passive movement process was carried out slowly, with one training session per day for one hour each time; when the CPM training was finished, the patient was instructed to lay the affected limb flat on the bed, slightly elevate the affected foot, and ice the ankle joint for 20 to 30 minutes immediately. The above CPM treatment lasted for 3 to 4 days in total. 4. From the 5th to 6th postoperative day, the patient's CPM range of motion was increased by 1° per day, and the patient was moved twice a day for 1 hour each time for 3 weeks; when the patient's stitches were removed 2 weeks after surgery, the range of flexion of the stepped joint could generally reach 35° to 5°. In the absence of obvious swelling of the affected limb, patients were given gentle and slow ankle massage to prevent soft tissue adhesions in the manic joints, and resistance training of the foot was carried out to enhance the muscle strength of each muscle group of the ankle joint. 5.Beginning 1 week after surgery, the patient should start walking on crutches with partial weight-bearing, 2-3 times a day for 30 minutes each time. 6.6 weeks after surgery Abandon the crutches, the patient in front of the posture mirror for balance function training, after the patient can maintain balance on their own to encourage their normal walking. Patients in the walking training process, strictly follow the no-load active exercise, partial resistance exercises, fully weight-bearing active activity exercises transition principle, but also interspersed with hip flexion, knee flexion, kicking, up and down stairs and other training.