More than 4 months after the operation of comminuted fracture of the heel bone, there is still walking pain, which is a normal phenomenon, it may be caused by the growth of soft tissues, and also need to consider the local muscle congestion, you can take ibuprofen, aspirin and so on to alleviate the pain. 1. Soft tissue growth: due to the comminuted fracture in the onset and during surgery, the surrounding soft tissues, muscles and nerves caused serious damage, so after the end of surgery, the local tissues still need about 3 to 6 months to help the soft tissues to rebuild, so in the process of exercise may cause pain, which is a normal phenomenon. 2. Muscle congestion: Because patients with comminuted heel fracture need to rest in bed and avoid exercise after surgery, there will be different degrees of muscle atrophy and decreased muscle tone during the rest process. After a long period of reduced activity, if you exercise again, it will lead to transient congestion and lactic acid buildup in the local muscles, which will cause pain. If pain occurs during exercise after a comminuted fracture of the heel, it is recommended that the activity level be reduced, and medication should be used with caution and in accordance with medical advice.