Wanitcharoenporn Wiboon, Chareancholvanich Keerati, Pornrattanamaneewong Chaturong
J Med Assoc Thai. 2014 Dec;97(12):1308-13.
To measure the intraoperative anthropometric dimensions of Thai distal femurs in order to correlate that data with unisex and gender-specific TKR implants, and to analyze the suitability of gender-specific prostheses for Thai female knees.
Two hundred Thai patients (170 females and 30 males) who underwent unilateral TKR were recruited. Three parameters of resected distal femurs were measured intraoperatively including anteroposterior dimensions of medial (APM) and lateral (APL) condyles, and mediolateral (ML) width of total condyles which were compared with the dimensional data of two femoral implant components, Nexgen LPS-Flex and Gender Solution Nexgen LPS-Flex. Scatter diagrams were used to assess compatibility; the final type and size of implanted prostheses were recorded.
Thai females had significantly smaller knees than Thai males. The femoral components of both types of prostheses were found to have a tendency toward ML under-coverage in both female and male femurs. These mismatches were more noticeable when small-sized, gender-specific prostheses were used. The overall rate of use of gender-specific components in this study was 15%.
The unisex and gender-specific prostheses evaluated in this study do not appear suitable for Thai knees. Particular modifications of implants are required for Thai knees.
测量泰国人股骨远端的术中人体测量尺寸，以便将该数据与通用型和特定性别的全膝关节置换（TKR）植入物相关联，并分析特定性别的假体对泰国女性膝关节的适用性。
招募了200例行单侧全膝关节置换术的泰国患者（170名女性和30名男性）。术中测量切除的股骨远端的三个参数，包括内侧髁前后径（APM）、外侧髁前后径（APL）以及髁的内外侧宽度（ML），并将其与两种股骨植入部件（Nexgen LPS-Flex和Gender Solution Nexgen LPS-Flex）的尺寸数据进行比较。使用散点图评估兼容性；记录植入假体的最终类型和尺寸。
泰国女性的膝关节明显小于泰国男性。两种类型假体的股骨部件在女性和男性股骨中均有内外侧覆盖不足的趋势。当使用小尺寸的特定性别假体时，这些不匹配更为明显。本研究中特定性别部件的总体使用率为15%。
本研究中评估的通用型和特定性别的假体似乎不适用于泰国人的膝关节。泰国人的膝关节需要对植入物进行特殊改良。
