Usually after the fracture, a bony scab appears on the broken end of the fracture, at which time the fracture has initial stability and the risk of displacement is greatly reduced. The bony scab appears about one month after the fracture, so the first month of the fracture must be cast braking, through the cast external immobilization to increase the stability of the fracture, to reduce the fracture end of the micromovement. The cast can be removed after one month of scab formation, as the fracture has initial stability and the risk of displacement is greatly reduced. Generally, the fracture line disappears three months after the fracture, at which time the fracture reaches clinical healing.