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目的:通过骨折地图技术绘制C型桡骨远端骨折的骨折形态和测量桡尺远端韧带长度，为临床及生物力学研究提供参考数据。方法:自2018年1月至2018年12月我院收治的59例OTA/AO 23 C型桡骨远端骨折和15例志愿者共30个腕关节作为健康对照组，其腕关节经过薄层CT扫描后，导入Mimics医学软件进行三维重建。桡骨远端骨折线通过标准化后导入模板，拟合后得到骨折线形态。通过测量乙状切迹与尺骨茎突基底部和隐窝的距离，得到桡尺远端韧带的长度。结果:在桡腕关节面，骨折线主要集中在月骨窝周围，骨折线集中为交叉十字；在掌侧面，骨折线主要集中在水泻线附近；在背侧面，骨折线集中在Lister结节周围，且骨折线散在分布；在乙状切迹区域，骨折线集中于乙状切迹的中间1/3处和背侧1/3处；在桡骨茎突区域，可见桡骨茎突相对完整，骨折线分布于桡骨茎突下方。桡尺远端韧带的四组韧带即掌侧浅桡尺远端韧带、背侧浅桡尺远端韧带、掌侧深桡尺远端韧带、背侧深桡尺远端韧带的长度，在C型桡骨远端骨折的亚型（C1、C2、C3）组间差异无统计学意义（n P>0.05）；各组与健康对照组（n=30）比较，差异无统计学意义（n P>0.05）。当骨折线位于乙状切迹的掌侧1/3处和背侧1/3处时掌侧浅桡尺远端韧带、背侧浅桡尺远端韧带、背侧深桡尺远端韧带的长度值与健康对照组（n=30）比较，差异有统计学意义（n P0.05); there was no significant difference between the groups and the healthy control group (n=30,n P>0.05). When the fracture line was located in the volar 1/3 and dorsal 1/3 of the sigmoid notch, the length of the palmar superficial distal radioulnar ligament, the dorsal superficial distal radioulnar ligament and the dorsal deep distal radioulnar ligament were significantly different from that of the healthy control group (n=30,n P<0.05).n Conclusion:The fracture pattern of type C distal radius can be visualized by fracture mapping technology. On the radiocarpal joint surface, the fracture line is concentrated around the lunate fossa; in the joint area of sigmoid notch, the fracture line is more concentrated in the middle 1/3 and the dorsal 1/3 of sigmoid notch. When the fracture line is distributed in the volar 1/3 and the dorsal 1/3 of sigmoid notch, it may lead to the risk of distal radioulnar ligament injury.