Scope of application: This rehabilitation procedure is applicable to patients undergoing arthroscopic surgery for soccer ankle (ankle osteoarthritis or chronic synovitis of the ankle joint). The main surgical components include synovial debridement, cartilage focal debridement and microscopic osteotomy of the anterior tibial margin. On the postoperative day: the patient should rest mainly in bed while elevating the patient (under the surgical knee and under the calf with pillows), and the affected toes should be dorsiflexed and plantar flexed from time to time. Remember to move only the toes and not the dorsiflexion and plantarflexion of the surgical ankle. The first day after surgery: Start to move to the ground, still encourage the patient to do dorsiflexion and plantarflexion of the toes. Patients begin to walk on the ground with the aid of crutches, however, toe pointing only is recommended on the operated side of the foot, but not full weight bearing. The time spent walking on the ground is controlled, and it is generally recommended to walk on the ground 3-4 times a day for 5 minutes each time. From the second to the sixth postoperative day, in addition to performing the activities of the second postoperative day, daily strengthening of the contraction and relaxation linkage of the quadriceps, straight leg raising exercises and slow dorsiflexion 0° to 5° exercises and slow plantarflexion 0° to 5° exercises with the ankle in the 90° position as the 0° position. The reciprocal movement from plantarflexion 5° to dorsiflexion 5° is one ankle flexion and extension activity, 50 consecutive activities each time, 3 times a day, 150 times in total. One week to two weeks after surgery: the same contraction and relaxation exercises for the quadriceps were performed as before, but the range of motion for dorsiflexion and plantarflexion of the ankle joint was the same as “the second day to the sixth day after surgery”, but the weight bearing on the operated side of the foot could reach 30% of normal. The range of dorsiflexion and plantarflexion of the ankle joint was increased from 5° dorsiflexion to 5° plantarflexion to 10° dorsiflexion to 10° plantarflexion at one to two weeks postoperatively. Weight-bearing of the foot on the operated side can reach 50% of normal. Five to six weeks after surgery: the range of ankle dorsiflexion and plantarflexion increases to 20° dorsiflexion to 20° plantarflexion. And the patient can try full weight-bearing. The walking distance of full weight-bearing is adjusted according to the response of different patients after walking, which is different for each patient. Two months after surgery: In addition to full weight-bearing, the ankle joint also starts to move within a completely normal range. There are three ways to practice ankle dorsiflexion and plantarflexion: ① Patients themselves perform ankle dorsiflexion and plantarflexion by pulling with both hands; ② Patients are helped by doctors or their family members to perform passive dorsiflexion or plantarflexion exercises; ③ Patients help themselves to practice ankle dorsiflexion by squatting and plantarflexion by kneeling on the bed. Three months after surgery: Gradually return to normal functional activities of the ankle joint or walking; however, individual patients may experience swelling of the ankle and back of the foot when moving a lot in the short term after surgery, but it will disappear after rest. Six months after surgery: Generally, the condition of the ankle joint can basically return to normal after six months after surgery. At this time, the swelling of the ankle joint after activity or the swelling of the back of the foot will also slowly disappear.