腕关节CT两种不同体位对下尺桡关节显示的影响

Effects of Two Different Positions of Wrist CT on the Display of Distal Radioulnar Joint

目的:探讨比较CT检查中腕关节不同体位对下尺桡关节(DRUJ)结构状态显示的区别。方法:选取110例患者,均采用腕关节后前位(旋前位)和腕关节侧位(中立位)进行两次CT投照。由2名医师对扫描图像进行独立观察,判断骨折和下尺桡关节(DRUJ)对位情况,并采用Mino法对位移距离记录,进行统计学分析。结果:两体位向背侧位移距离有显著差别,平均位移距离2.19±1.92mm。位移数值间存在显著统计学差异,P<0.05。结论:既往CT使用腕关节后前位进行投照,体位不易摆放,存在尺骨明显向背侧位移的特点。用腕关节侧位进行CT投照更易摆放,易纠正腕关节被动旋转向背侧位移的情况。为诊断和测量下尺桡关节(DRUJ)提供更多的参考依据。

Objective:To explore and compare the differences of wrist joint positions in displaying the structural state of distal radioulnar joint(DRUJ) in CT examination.Methods:110 patients were selected for two CT scans with wrist posterior anterior position(pronation position) and wrist lateral position(neutral position). Two doctors independently observed the scanned images to judge the alignment of fracture and DRUJ, and recorded the displacement distance by Mino methodfor statistical analysis.Results:there was a significant difference in the dorsal displacement distance between the two bodies, with an average displacement distance of 2.19±1.92 mm. There was significant statistical difference between the displacement values(P<0.05).Conclusion:in the past, CT used the posterior anterior position of the wrist joint for projection. The body position is not easy to place, and the ulna has the characteristics of obvious dorsal displacement. CT projection with wrist lateral position is easier to place and correct the passive rotation and dorsal displacement of wrist. It provides more reference for the diagnosis and measurement ofdistal radioulnar joint(DRUJ).