Walking knee pain after three months of calf fracture surgery may be caused by wasting atrophy, joint adhesion and delayed healing of fracture, etc. It is recommended to take physical measures such as hot compresses and functional exercises, and at the same time, overwork should be avoided. 1. Wasting atrophy: the muscles on the affected side of the limb have obvious wasting atrophy, and the atrophied muscles will cause obvious soreness and pain in the knee joint when walking. Massage and hot compresses can be applied to promote local blood circulation and relieve pain and other discomforts. 2. Joint adhesion: the joints of the affected side of the limbs have joint adhesion contracture, poor functional exercise in the later stage, in the knee joint part of the force activities, it is easy to pull the adhesion contracture ligament joint capsule, thus triggering pain in the joint parts. It is necessary to carry out functional exercise, such as lower limb muscle exercise, such as simple elevation of the lower limbs, rotation of the lower limbs and other actions. 3. Delayed healing of fracture: it is seen in the delayed healing of fracture, the fracture is still unstable at three months, and there will be pain in the fracture when walking. So when you walk three months after the fracture, you will still have knee pain when walking because of the delayed healing of the fracture. The treatment needs to continue to observe, if there is no sign of fracture healing for a long time, you can have another surgery. Walking knee pain three months after calf fracture surgery needs to be closely observed, do not delay diagnosis and treatment.