Post-operative cast immobilization for 6 weeks, followed by removal of the cast and gradual rehabilitation. Post-operative day 1-12 weeks: The rehabilitation program ensures that all patients return to normal joint range of motion in the post-operative ankle and meet their basic needs. 6-8 weeks postoperative: early weight loss running training was added during this period (weight loss of about 3/4 of body weight gradually transitioned to full weight bearing, running speed of 0.3m/s, running angle of 0 degree to 10 degrees gradually increased). Postoperative 9-12 weeks: walking exercises (speed 1m/s, angle 16 degrees uphill) on the running platform under full weight.