Abstract:

BACKGROUND: he matching degree of shape and dimension of the total knee arthroplasty prosthesis to the knee joint significantly affects the operative and postoperative effects. There are few researches the Chinese proximal tibia parameters, so it is necessary to explore the characteristic data and domestic prosthesis.
OBJECTIVE: To obtain the normal linear parameters on the different resection levels of normal proximal tibia in Chinese.
METHODS: A total of 82 normal people/135 knees, including 85 knees of males and 50 females, with an average age of 47.2 years (range from 19 to 82 year), were selected. Original CT image data were utilized to set up the three-dimensional model of Chinese normal knees and measure the related linear parameters of proximal tibia section on the work station.
RESULTS AND CONCLUSION: The average anterior-posterior (AP) and medial-lateral (ML) lengths of the proximal tibia section were (48.41±3.41) and (75.03±4.88) mm, respectively; the average ratio of AP and ML (RAP／ML) was (0.655±0.032). AP and ML showed statistical significances among different genders and different osteotomy height (P < 0.01). Therefore, the characteristics and the gender difference should be considered when we design the tibial plateau prosthesis.