The causes of inward contraction of calf muscle after 6 months of fracture include muscle wasting atrophy, fibrous tissue proliferation, etc., which can be relieved by rehabilitation therapy and surgery. 1. Muscle wasting atrophy: the affected limb is immobilized for a long time, resulting in less muscle activity, which leads to muscle wasting atrophy and inward contraction of the calf muscle. It can be treated through rehabilitation training, and common programs include lower limb squatting, bicycling, swimming, and so on. However, it should be noted that the exercise should be done according to the amount of strength, step by step, so as not to overwork the limbs and injuries. 2. Fibrous tissue hyperplasia: If the fracture is not properly cared for during the fracture, it may lead to continuous local inflammation, resulting in fibrous tissue hyperplasia, which is manifested by inward contraction of the muscle. If there is no discomfort, no special treatment can be done for the time being. If the hyperplasia tumor continues to increase in size, surgical resection can be considered. Fracture 6 months walking calf muscle inward tightening, should go to the hospital actively consult the review, identify the cause for targeted treatment.