Background: Epiphysis of distal end of tibia fracture is quite common in children epiphysis injury, because of the complex damage mechanism and often leads to growth retardation and joint deformity, the patient's physical and mental damage larger; also epiphysis injury restoration requires higher standard and more difficult to fixed, and methods are being actively explored to improve the curative effect and prevent the sequelae. Our hospital pediatric department of orthopedics expects to conduct prospective study through multi center to study the influence of factors such as the tibia epiphysis fracture of distal injury's mechanism and initial and residual displacement and treatment etc. on patients' prognosis of late growth disorders, joint deformity and ankle function. Methods and analysis: To join the multi center research collaboration group of the south pediatric department of orthopedics (including Pediatric Department of orthopedics of Wuhan Union Hospital, Wuhan Tongji Hospital, Hunan Children's Hospital, Wuhan women and children's Hospital, Foshan Hospital of traditional Chinese medicine, Shenzhen children's Hospital, Guangzhou city women and children's Medical Center), the formation of multi center research network, writing program, including the inclusion and exclusion criteria, grouping and follow-up time, method. Participating in the working group meeting, listening to the expert's opinions to improve research programs, formulate the tracking table of distal tibial epiphyseal fracture, and starting to implement after approved by the medical ethics committee of each hospital. The hospital is responsible for supervision in the whole process of project implementation, and building the real-time reporting system, and it is the responsible person of pediatric department of orthopedics of Foshan Hospital of TCM to do the random inspection. After the completion of data collection, data entry and statistical analysis conducted by the pediatric department of orthopedics in Foshan Hospital of TCM. Ethics and promotion: The research is approved by the hospital medical ethics committee of the south pediatric orthopedics multi center cooperative research group. Single blind method is performed for children in the course of the study. Research data is shared by all participating units and joints promotion of research results. Registration: To register and update the study on the United States NIH ClinicalTrials.gov website.
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Evaluation criteria of OVADIA and the change over time
Timeframe: 1 year,2year,3year,4year,5year(We think that develops gradually of limb shortening or angle because of early epiphyseal closure will result in a lowered grad of OVADIA)