Abstract
Background
There is paucity of data concerning the morphological dimensions of the distal part of the femur and the proximal part of the tibia in Indian population. The objective of this study was to analyse the exact anatomic data collected from patients undergoing total knee arthroplasty.
Methods
Morphologic data from the distal part of the femur and proximal part of the tibia, from 50 knees, were obtained during total knee Arthroplasty, with a microcalliper. The study included 30 women and 20 men, who had a mean age of 65 years. A characterisation of the aspect ratio (the medial-lateral to anterior-posterior dimensions) was made for the proximal aspect of the tibia and distal part of the femur.
Results
A significant difference was noticed in the dimensions of males and females. Females were found to have smaller dimensions, and the difference was statistically significant. From the morphologic data no significant difference was noted in the aspect ratio of both femur and tibia in males and females, and between larger and smaller knees. A comparison of the bone dimensions from the study data and the dimensions of the femoral component showed average medial-lateral overhang of +1.9 mm in women.
Conclusion
The results of this study will allow manufacturers to make more appropriate determination of the sizes of components for total knee arthroplasty in Indian population having smaller anthropometric measurements than Western populations.
