Heel fracture refers to heel fracture, calf belly refers to the back of the calf, heel fracture twenty-seven or eight days after the back of the calf pain may be due to the following reasons: fracture has not yet healed, soft tissue injuries, blood circulation disorders and so on. 1. The fracture has not yet healed: 27~28 days after the heel bone fracture, the fracture is still in the bone scab formation period, osteoblasts are still proliferating into new bone. Since the fracture has not yet healed, the pain in the lower leg is normal. 2. Soft tissue injury: Because the fracture is caused by strong violence, it can be accompanied by soft tissue injury such as Achilles tendon, gastrocnemius muscle, flounder muscle and so on at the back side of the calf, and the soft tissue injury has not yet recovered, and pain can also occur. 3. Blood circulation disorder: After heel fracture, the lower limbs need to be fixed with plaster, due to the lack of activity of the lower limbs, it can cause local blood circulation disorder, and the obstruction of blood return can also cause soreness at the back of the calf. Causes of heel fracture pain at the back of the calf are more reasons, may also be related to traumatic arthritis, local adhesions and other diseases If the symptoms continue to be unrelieved, it is recommended to consult a doctor in a timely manner, to clarify the cause of the disease, and to carry out targeted treatment.