结论半屈肘位时易发生以尺桡骨撞击力与重力的上下剪切作用为主的肱骨外侧髁骨折；
Conclusion The fracture of lateral condyle of humerus occurred easily at the flection posture of elbow because of collision which radius and ulna struck humerus;
结论半屈肘位时易发生以尺桡骨撞击力与重力的上下剪切作用为主的肱骨外侧髁骨折；
Conclusion The fracture of lateral condyle of humerus occurred easily at the flection posture of elbow because of collision which radius and ulna struck humerus;
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