Methods: the fractured pelvis was fixed by external support at the anterior ring and percutaneous sacroiliac canulated screw at the posterior ring.
方法：骨盆前环外固定支架固定，骨盆后环经皮骶髂空心螺钉固定治疗骨盆骨折。
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Objective To compare the clinical effectiveness of fixations of odontoid process fractures preliminarily with anterior single one-threaded and double-threaded canulated compressive screws.