The Achilles tendon is the largest tendon in the human body, about 15 cm long, gradually narrowing and thickening from top to bottom, with the narrowest 3-6 cm above the Achilles tuberosity. Achilles tendon adjacent to the stop and muscle side has a good blood supply, tendon middle blood supply is less, after the injury can cause local malnutrition, degenerative changes, the basis for Achilles tendon rupture. When jumping, the Achilles tendon can bear 3 to 4 times the weight, and the rupture is prone to occur on the basis of degeneration. It is a more common clinical injury. 【clinical manifestations and diagnosis】 1.Fresh Achilles tendon injury manifests as heel pain, inability to do foot and ankle movement, standing and walking. 2.Local swelling, tenderness, and interruption of Achilles tendon continuity and depression can be felt during examination. 3.Decreased plantar flexion strength and positive Thomposon’s sign. 4, old injury is mostly limp, flat foot walking, can not lift the heel, touch the Achilles tendon has depression, calf muscle atrophy, but due to scar adhesion continuous, Thomposon’s sign is negative. Treatment】 The treatment of Achilles tendon rupture is divided into surgical treatment and non-surgical treatment. 1.Non-surgical treatment For incomplete rupture of Achilles tendon, non-surgical treatment is feasible. Generally, mild knee flexion and ankle plantarflexion plaster fixation is carried out, and after 3 to 4 weeks, it is changed to ankle plantarflexion calf plaster fixation until 6 weeks. 2.Surgical treatment is needed for complete rupture of Achilles tendon and old Achilles tendon rupture with limited function, i.e. surgical anastomosis and repair of Achilles tendon. The same post-operative cast is fixed in mildly flexed knee and ankle plantarflexion position. Rehabilitation tips】 1. The affected limb should be elevated after non-surgical or surgical treatment to facilitate blood circulation, and activities of the toes should be started as early as possible on the same day (after the anesthesia for surgery disappears) to prevent swelling of the affected limb. 2.The lth day of surgery In addition to tissue activities, straight leg elevation and side leg elevation activities should be started. 3.Wound dressing should be changed 48 hours after surgery, drainage device should be removed if there is drainage, and wound condition should be observed. Wound stitching should be removed 2 weeks after surgery. 4. 3-4 weeks after surgery, change the long-leg cast to short-leg cast under the knee to continue fixation and start knee activities. 5.After 4 weeks, you can start to remove the cast intermittently for ankle flexion and extension activities, and perform injury I:1 massage appropriately, and continue the cast fixation after the exercise. 6.6 weeks after surgery, remove the cast and continue the above exercises, paying attention to ankle flexion and extension and other activities in all directions. 7. 7 weeks after surgery, start to walk with the heel padded by holding the crutches. Gradually reduce the height of the heel, and start to walk with flat heels until 2 months after surgery, and gradually lose the crutches, but pay attention to prevent falls. Gradually start to practice jogging and daily activities at 3 months after surgery.