Triplane fracuture, which occurs in a limited ages before closure of distal tibial epiphysis, is relativery rare. We experienced 5 such cases aged from 10 to 15 years old. The treatment methods and results were reported.
The causes of injuries include 1 case of sport injury, 3 cases of falling down from the bicycles, and 1 case of falling down accident. Diagnosis is possible with 4 views of simple bone X-ray pictures. For detecting more detail bone fracture displacement, combining applications of tomography, CT, MRI, etc are useful. We performed anatomical reduction and fixation in cases with more than 2mm displacement on the joint surfase. All of our cases with more than 2mm displacement were treated with open reduction and internal fixation. The ultimate results are excellent, showing no deformity, plan or limitation of ROM.

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