Abstract

Purpose

The aim of this study was to evaluate the anthropometric differences between knees of Indonesian Asians and Dutch Caucasians and the fit of nine different knee implant systems.

Methods

A total of 268 anteroposterior (AP) and lateral knee preoperative radiographs from 134 consecutive patients scheduled for total knee arthroplasty at two different centres in Jakarta and Leiden were included. Both patient groups were matched according to age and sex and included 67 Asians and 67 Caucasians. We assessed the radiographic differences between the Asian and Caucasian anthropometric data. The dimensions of the nine knee implant designs (Vanguard, Genesis II, Persona Standard, Persona Narrow, GK Sphere, Gemini, Attune Standard, Attune Narrow, and Sigma PFC) were compared with the patients’ anthropometric (distal femur and proximal tibia) measurements.

Results

The Dutch Caucasian patients had larger mediolateral (ML) and AP femoral and tibial dimensions than the Indonesian Asians. The aspect ratios of the distal femur and tibia were larger in Asians than in Caucasians. The AP and ML dimensions were mismatched between the tibial components of the nine knee systems and the Asian anthropometric data. Both groups had larger ML distal femoral dimensions than the knee systems.

Conclusion

Absolute and relative differences in knee dimensions exist not only between Asian and Caucasian knees but also within both groups. Not all TKA systems had a good fit with the Asian and Caucasian knee phenotypes. An increase in the range of available knee component sizes would be beneficial, although TKA remains an adequate compromise.

Level of evidence

III.

中文翻译：

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印度尼西亚和荷兰患者的膝关节植入物不匹配：需要增加尺寸

摘要

目的

这项研究的目的是评估印度尼西亚亚洲人和荷兰白种人的膝盖之间的人体测量学差异以及九种不同膝盖植入系统的适合度。

方法

包括来自雅加达和莱顿两个不同中心的134名计划进行全膝关节置换术的连续患者的共268例前后膝关节X光片。两组患者均根据年龄和性别进行了匹配，包括67名亚洲人和67名白种人。我们评估了亚洲和高加索人体测量数据之间的射线照相差异。将九种膝关节植入物设计（Vanguard，Gen​​esis II，Persona Standard，Persona Narrow，GK Sphere，Gemini，Attune Standard，Attune Narrow和Sigma PFC）的尺寸与患者的人体测量（股骨远端和胫骨近端）进行了比较。

结果

与白种人相比，荷兰高加索人患者的中外侧（ML）和AP股骨和胫骨尺寸更大。亚洲人的股骨远端和胫骨的纵横比比白种人高。AP和ML尺寸在9个膝盖系统的胫骨组件和亚洲人体测量数据之间不匹配。两组均比膝关节系统具有更大的ML远端股骨尺寸。

结论

膝关节尺寸的绝对和相对差异不仅存在于亚洲人和高加索人的膝盖之间，而且在两组中也存在。并非所有的TKA系统都与亚洲和高加索人的膝盖表型相适应。尽管TKA仍然是一个适当的折衷方案，但是增加可用的膝盖组件尺寸范围将是有益的。

证据水平

三，