摘要:目的： 测量正常蒙古族人胫骨平台内翻角，为国人膝关节置换术提供数据参考。方法：正常蒙古族人60例，摄双下肢全长正位片，数据经DICOM格式输入电脑保存，图像通过AutoCAD处理，获取胫骨平台内翻角（PT角）及小腿机械轴垂直线和双侧股骨髁远端切线的夹角（FT角）数据。结果：（1）正常蒙古族人膝关节PT角与FT角：（4.17±0.69）°、（4.95±0.57）°；男PT角：（4.11±0.67）°、FT角：（4.86±0.59）°；女PT角：（4.23±0.70）°、FT角：（5.04±0.55）°。（2）同性别左右侧对比无差异(P>0.05)；不同性别间数值无统计学意义(P>0.05)。（3）蒙古族人与汉族的PT角和FT角无明显差异(P>0.05)。（4）正常蒙古族人PT角与FT角均大于西方人，存在统计学意义(P<0.05)。结论：正常蒙古族人PT角和FT角与汉族数值进行比较无明显差异，而与西方人数据比较存在统计学意义。

Abstract:Objective: To measure the medial tibial angle of the tibial plateau in normal Mongolians and provide data for Chinese knee replacement. Methods: a total of 60 normal Mongolian people were photographed with the whole length of the lower limbs. The data were stored in DICOM format and stored in AutoCAD.Results: (1) normal Mongolian People's knee joint PT angle and FT angle: (4.17 + 0.69) degrees, (4.95 + 0.57) degrees; male PT angle: (4.11 + 0.67) degrees, FT angle: (4.86 + 0.59) degrees; female PT angle: (4.23 + 0.70) degrees, FT angle: (0.70 + 0.70). (PT) there is no difference between the right and right sides (P>0.05); (FT)There was no significant difference between the sexes (P>0.05). (3) there was no significant difference in PT angle and FT angle between Mongolian and Han nationality (P>0.05). (4) normal Mongolian people had larger PT angles and FT angles than Westerners (P<0.05). Conclusion: there is no significant difference between normal Mongolian people in terms of PT angle and FT angle compared with Han nationality values, but there is statistical significance compared with westerners' data.

内蒙古自治区卫生计生委课题(201301054);内蒙古医科大学青年创新基金项目（YKD2016QNCX040）