The Study of Anatomical Measurement of Proximal tibia and Fitness of tibial Prosthesis in Total Knee Arthroplasty

Bae, Dae Kyung; Park, Jae Young

Abstract

OBJECTIVES
The purpose of this study is to provide the basic data for anatomy of proximal tibia by real measurement, to determine the morphologic fitness between the proximal tibia of Korean and the tibial prosthesis in total knee arthroplasty, and consequently to provide basic data for development of prosthesis that appropriate to Korean.
MATERIALS AND METHODS
The anteroposterior length and mediolateral length of proximal tibia were measured for 173 knees of 117 patients who underwent total knee arthroplasty. Also, obtained data from intraoperative measure of proximal tibia were analysed according to patient's age, sex and disease.
RESULTS
The results show that average mediolateral length of proximal tibia is 72.7 +/- 4.0mm, average anteroposterior length of medial plateau is 48.0 +/- 3.1mm, and average anteroposterior length of lateral plateau is 39.8 +/- 2.9mm. The mediolateral length of proximal tibia and the anteroposterior length of medial tibial plateau are significantly larger than tibial prosthesis designed by 5 different companies. The morphological differences according to disease entity are significantly larger in osteoarthritic patient group than in other disease entity. The significant difference according to patient's age is not found.
CONCLUSION
The results of this study show the morphologic discrepancy between the proximal tibia of Korean and the tibial prostheses, and the development of design of tibial prosthesis for Korean should be considered.