Abstract

Introduction: Upper end of tibia is the component of knee joint. Accurate morphometric anatomical data of the upper end of tibia and morphometric differences according to gender are very important to make design of total knee joint replacement prosthesis. Knee prosthesis made based on morphometric data of components of knee (femur and tibia) and according to gender difference will give better results after surgery in early mobility of patients as well as fewer post-operative complications. Aim: Present study was done to find out sexual dimorphism in upper end of tibia as well as differences in morphometric data of upper end of tibia between other populations across the world and within India. Materials and Methods: For the present study the material consisted of 120 dry tibia of known gender were used. Out of them 60 were of male tibia (30 of right side and 30 of left side) and 60 were of female tibia (30 of right side and 30 of left side). We have selected five metrical parameters 1. Bicondylar width (BCW), 2. Medial condylar antero-posterior distance of superior articular surface (MCAPD), 3. Lateral condylar antero-posterior distance of superior articular surface (LCAPD), 4. Medial condylar transverse distance of superior articular surface (MCTD) and 5. Lateral condylar transverse distance of superior articular surface (LCTD) for the present study based on which the tibial component of prosthesis for knee joint replacement surgery is made. Results: All five parameters which are chosen are found significantly larger in male than females. The findings are smaller than Caucasian population and population of North India and found larger than population of South India. Conclusion: Present study provides data of measurement of upper end of tibia by direct observation which will be useful to select correct sized knee prosthesis according to measurements. We have also provided data genderwise and on right and left side which will improve the longitivity of knee prosthesis, increased mobility of patient and improve the lifestyle after knee replacement surgery.

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