An incomplete fracture is one in which the continuity and integrity of the bone is partially interrupted, not completely disconnected, and the fracture end will have some bone tissue or periosteum attached and only partially damaged. The most typical incomplete fracture is the green branch fracture in children, which often results in an incomplete fracture due to the softer and tougher bones and thicker and tougher periosteum in children. Certain bone fractures or fractures of irregular bone or fracture fractures in adults are also incomplete fractures, because there may be only a slight cortical fracture and a continuous periosteum or cortex. In this case, as long as the fracture is fixed and the fracture site is allowed to grow and recover, the damage is relatively mild, the sequelae are usually few, and the prognosis is good.