Fan Lin, Xu Tianyang, Li Xifan, Zan Pengfei, Li Guodong
aDepartment of Orthopedics, Tongji University School of Medicine bDepartment of Radiology, Shanghai Tenth People's Hospital, Shanghai, China.
Medicine (Baltimore). 2017 Nov;96(46):e8524. doi: 10.1097/MD.0000000000008524.
Morphologic measurements of the femoral and tibial features of western population have been done in several studies, which provides the fundamental data for the design of total knee arthroplasty prosthesis used globally, including China. However, researches on anatomic and morphologic features of the knee in Chinese populations of both sexes have never been conducted. Our study was aimed at investigating the anatomic and morphologic features of the knees of the Southeastern Chinese population by magnetic resonance imaging (MRI) scans, so as to provide parameters for sex- and ethnic-specific implant designs in the future.A total of 245 knees from 244 Chinese adults (130 females and 114 males, aging from 18 to 89 years) who received knee MRI scan from November 2014 to October 2015 were recruited and analyzed. A set of linear and angular parameters, and 6 normalized ratios were measured and calculated on the distal femur and proximal tibia.The knee size was significantly different between sexes. Compared with women, men have larger (P < .01) medial-lateral (ML) and anterior-posterior (AP) dimensions in both distal femur and proximal tibia. Differences in femoral shape, represented by the femur surface ratio, between both sexes were also identified (1.23 ± 0.07 vs 1.27 ± 0.07, P < .01), whereas the ML/AP ratios of the tibia are similar between both sexes (1.44 ± 0.07 vs 1.44 ± 0.09, P = .97). We also found substantial difference in the morphology of femur and tibia plateau in Southeastern Chinese population compared with data obtained from western populations.Our study measured the anatomic and morphologic features of the knees in Southeastern Chinese population, and identified knee morphologic differences between both sexes, as well as western and Chinese population. Further clinical studies are needed to determine other essential parameters for the design of prosthesis to the Chinese populations.
多项研究已对西方人群股骨和胫骨特征进行了形态学测量，这为包括中国在内的全球使用的全膝关节置换假体设计提供了基础数据。然而，从未有过关于中国两性人群膝关节解剖学和形态学特征的研究。我们的研究旨在通过磁共振成像（MRI）扫描调查中国东南部人群膝关节的解剖学和形态学特征，以便为未来针对特定性别和种族的植入物设计提供参数。
招募并分析了2014年11月至2015年10月期间接受膝关节MRI扫描的244名中国成年人（130名女性和114名男性，年龄在18至89岁之间）的245个膝关节。在股骨远端和胫骨近端测量并计算了一组线性和角度参数以及6个标准化比率。
膝关节大小在两性之间存在显著差异。与女性相比，男性在股骨远端和胫骨近端的内外侧（ML）和前后（AP）尺寸更大（P<0.01）。两性之间以股骨表面比率表示的股骨形状差异也得到了确认（1.23±0.07对1.27±0.07，P<0.01），而胫骨的ML/AP比率在两性之间相似（1.44±0.07对1.44±0.09，P = 0.97）。我们还发现，与西方人群的数据相比，中国东南部人群的股骨和胫骨平台形态存在显著差异。
我们的研究测量了中国东南部人群膝关节的解剖学和形态学特征，确定了两性之间以及西方和中国人群之间膝关节形态的差异。需要进一步的临床研究来确定针对中国人群的假体设计的其他关键参数。
