Abstract:

BACKGROUND: Whether the shape and dimension of the total knee arthroplasty prosthesis are matched to the knee joint significantly affect the operation and postoperative effect. There are few researches of the Chinese proximal tibia parameters, so it is necessary to explore the characteristic data and domestic prosthesis.
OBJECTIVE: To obtain the normal area parameters on the different resection levels of normal proximal tibia in Chinese.
METHODS: A total of 82 normal Chinese (135 knees), including 85 knees in males and 50 knees in females, with an average age of 47.2 years (range from 19 to 82 years), were divided into groups according to the age, side of the knee and gender. Original CT image data were utilized to set up the three-dimensional model of Chinese normal knees and measure the related area parameters of proximal tibia section on the work station.
RESULTS AND CONCLUSION: The average area of the proximal tibia section was (3 232.33±405.19) mm2. Statistics analysis showed that the area parameters of males were significantly greater than the females (P < 0.01), while there was no significant differences in area among different side, age, resection bone height and inclination angel (P > 0.05). The sex differences should be considered when designing the domestic tibial plateau prosthesis and total knee arthroplasty. The study obtained primary normal reference values of geometry of proximal tibia in Chinese, which provides evidence for clinical operation of tibial plateau prosthesis design and total knee arthroplasty.