Race And Gender Difference On Morphological Measurement Of The Knee In Chinese And Indian Population For TKA

Objective- The objective of this study was to analyze the morphological measurement of the distal femoral and proximal tibia in Chinese and Indian knees.Study Design & Method- Retrospective subject Demographics of 55 knees from living subjects of middle aged(40-60 years) were analyzed in this study. 30 Chinese and 25 Indian subjects CT data were recruited. Measurements of FML, FAP, TML, TAP done with parallel and perpendicular aspect of Trans epicondylar axis, distal femoral cut surface that is parallel to the femoral epicondylar axis in the transverse plane. The tibial mediolateral(TML) measurements was defined as the longest mediolateral line that is parallel to the medio lateral axis on the proximal tibial surface in CT. T- TEST was used to determine if the morphological measurements were statistically different between the races and genders.Results- The results showed no significant differences between FML, FAP and TML, TAP between Chinese and Indian population measurement. An overall comparison between the Chinese and Indian race demonstrates that the Chinese have the larger AP and ML measurements than Indian population but no significant difference was reported. So the prosthesis selection among Chinese and Indian population can be same as because of same morphology with no significant difference. Future research in large sample size among the ethnic group may wish to incorporate this finding so as to be able to provide better implant fittings and specify implants of accurate size in Asian population at a larger scale.Conclusion- This study provides consideration rationale for designing total knee prosthesis, especially a gender-specific design suitable for the Chinese and Indian population as major ethnic population in Asia. This study shows that while designing the prostheses, the symmetrical and asymmetrical relationship between the anteroposterior measurements of distal femur and the proximal tibia should also be taken into account apart from the relationships between mediolateral and anteroposterior measurements.