Abstract: Abstract Objective: To investigate the clinical effect of different fixation method in treating pediatric extension-type supracondylar fracture of humerus. Methods: 48 cases of pediatric extension-type supracondylar fracture of humerus in our hospital from February 2013 to February 2014 were selected and they were divided into K-wire group and splint group, 24 cases in each group. K-wire group was given closed reduction and percutaneous K-wires fixation, splint group was given maneuver reposition and external fixation of small splints. Compared the fracture displacement situation, motor function of limbs after 3 months, postoperative morbidity rate of the two groups. Results: Occurrence rate of fracture displacement of K-wire group was obviously larger than splint group (P<0.01), the difference was statistically significant. Mild displacement, McIntyreⅢa and McIntyreⅢb occurrence rate of splint group was obviously higher than K-wire group (P<0.01), the difference was statistically significant. Excellent cases of K-wire group was obviously higher than control group (P<0.01), the difference was statistically significant. Adverse reaction rate of K-wire group was obviously lower than control group(P<0.01), the difference was statistically significant. Conclusion: K-wire fixation in treating pediatric extension-type supracondylar fracture of humerus has mild displacement, quicker function recovery, lower complication incidence rate and should be chosen preferentially.

Key words: 【Key words】pediatric, extension-type, fracture of humerus, K-wire, splint, comparison