Abstract
The purpose of this study is to study the mechanism of injury and to introduce a reduction method. 13 cases of triplane fracture in the distal tibial epiphysis treated in our hospital were reviewed clinically. There were 8 males and 5 females with an average age of 13.1 years old (range; 9 to 14 years). The average follow up period was 2 years 2 months (range; 6 months to 7.5 years). 8 cases were forced planter flexion-external rotation of the ankle at injury, only external rotation was seen in a case except for other unexplained cases. All cases were challenged closed reduction under spinal anesthesia, of which 7 cases required open reduction and internal fixation.
They recorded 98.2 points with the JOA score at follow-up. The length gap of the lower extremities was not explained clearly. The external rotation force of the ankle, in addition to the planter flexion force, is the most suspectable cause of the occurrence of triplane fracture. Manual reduction with K-wire inserted displaced fragments of the tibia is useful for cases which reject closed reduction.
