方法：配套干燥寰枢椎标本50套，用电子游标卡尺测量与进钉技术相关的解剖学数据。
Methods 50 dry atlas and axis specimens were used to measure anatomic data relative to atlas pedicle screw placement technique with an electronic digital caliper.
方法：用电子游标卡尺和量角器对40例干燥寰椎标本测量与进钉技术相关的解剖学数据。
Method:40dry atlas specimens were used to measure anatomic data relative to screw placement technique with an electronic digital caliper and a goniometer.
目的 探讨寰椎椎弓根螺钉的置钉方法。 方法 以电子游标卡尺测量48具干燥寰椎标本的相关解剖学数据；
Objective To improve the method of atlas pedicle screw fixation. Methods The anatomic data related to pedicle screw fixation were measured on 48 dry atlas specimens with an electronic caliper.
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