Tibial fibula three months to grow bone scab indicates that the fracture damage is more serious, may be comminuted fracture or periosteum local blood transportation damage caused by the need for local blood circulation slowly recovered. The blood supply of the distal calf itself is not very rich, and if the tibial fracture is comminuted or accompanied by obvious displacement, it may be accompanied by periosteal damage and trophoblastic artery damage, resulting in poor local circulation, so the healing is slow. Most patients with tibiofibular fracture have good growth of bone scab in three months, and the fracture line becomes blurred, basically reaching the standard of healing. In addition to the fracture itself, there are also physical reasons, such as anemia, malnutrition or local infections, which may also lead to less and slower growth of the bone scabs, and need to continue to strengthen the protection, avoiding weight-bearing on the ground, to prevent re-injury of the fracture.