股骨颈内收型骨折是指Pauwels角A.小于40°B.小于50°C.大于50°D.小于30°E.等于30°

作者: rantiku 人气: - 评论: 0
问题 股骨颈内收型骨折是指Pauwels角
选项 A.小于40° B.小于50° C.大于50° D.小于30° E.等于30°
答案 C
解析 :根据X线正位片上显示的骨折线倾斜度,即骨折线与两髂嵴连线所成的夹角(Pauwels角),大于50°者称内收型骨折,常有移位,剪力大,固定困难,不连接率高;小于30°者则称外展型骨折,多有嵌插,剪力小、较稳定,愈合率高。

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