Pediatric fracture is different from adult fracture, the anatomy, biomechanics and physiology of pediatric bone are very different from adult, so the type, diagnosis and treatment of pediatric fracture are also different from adult. Anatomical differences The pediatric skeleton contains X-ray transparent growth cartilage, because of which many traumatic injuries will affect the thickness of the growth plate or the epiphyseal plate can be seen in the plain film detached from the neighboring bone. The periosteum is thick and strong, and the appearance of bone scab is faster and more than adults. Second, biomechanical differences in pediatric bone than adult bone flexibility, more resistant to deformation of the external force. Pediatric bone cortical pores can limit the expansion of the fracture line, as in the case of neighboring window wall fissures after drilling is not easy to make the fissure expand. Adult compression of bone can not tolerate tension, on the contrary, the pore-rich pediatric bone is not easy to compress. Epiphyseal plate The epiphyseal plate, or growth plate, is the layer of cartilage that connects the epiphysis to the metaphysis. It is related to the growth of bone. Physiological differences 1. Growth and shaping: growth provides conditions for shaping to a large extent. With the increase of the length and circumference of the bone, the deformity caused by fracture can be corrected by the asymmetric growth of the epiphyseal plate and periosteum. Overgrowth: Fractures of the long diaphysis in children are accompanied by an increase in local blood flow, which increases the nutrition of the growth plate and stimulates the longitudinal growth of the bone. In a non-displaced femoral stem fracture, the femur on the injured side can grow approximately 1cm longer than the healthy side within 1-2 years. 3. Progressive deformity: Permanent damage to the growth plate can cause shortening of the bone or progressive angulation deformity. 4, the speed of healing: pediatric fracture healing ability, so should be as early as possible to fix the fracture. Should not be treated with adult fractures as too long to think about the disk. Pediatric fractures differ from adult fractures in many ways, and the relatively weak epiphyseal plate is susceptible to injury. Recognizing the diversity of epiphyseal plate injuries and applying modern therapeutic approaches are central to treatment. Active growth and good blood flow ensure that most pediatric fractures heal well. However, the unique characteristics of the pediatric skeleton may also lead to some progressive deformities. Therefore, the pediatric population is not a microcosm of the adult population, and pediatric fractures should not be treated according to adult fracture perspectives or methods, but rather according to the characteristics of the pediatric skeleton itself, with appropriate methods to ensure rational treatment.