A novel K-wire external fixation device was developed by the investigators. The K-wires can be connected by the device. After connection, the structure of the K-wires is transformed to an external skeletal fixator. Therefore, the K-wires are stabilized and unable to migrate independently. The stability of fracture fixation is better in patient with this K-wire external fixation device. The purposes of this study are to optimize the K-wire external fixation device and test its function in real clinical practice.
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Radiographs measurement
Timeframe: through study completion, an average of 1 year
Elbow range of motion
Timeframe: through study completion, an average of 1 year
Pin sites condition
Timeframe: 4 weeks