Design and fabrication of uncemented femoral prosthesis using CAD/CAM/Robotic integration method

doi:10.3969/j.issn.2095-4344.2014.40.004

Abstract

Abstract:

BACKGROUND: In total hip replacements, aseptic loosening of uncemented femoral hip prosthesis is the main reason for the failure of artificial hip replacement, the prerequisite of reducing aseptic loosening of prosthesis is to increase filling area of femoral prosthesis in femoral cavity.

OBJECTIVE: To obtain the filling rate of customized femoral prosthesis in femoral cavity and verify the validity of the methods of CAD/CAM/Robotic integration and the robot grind.

METHODS: In this paper, the CT data of femur were used to reconstruct three-dimensional model of femoral cavity. According to this model, a custom uncemented femoral hip prosthesis was designed, then the model of this custom prosthesis was imported into the CAD/CAM/Robotic software to generate cut path. After the cut path was imported into the robotic controller, the custom prosthesis can be fabricated, then this custom prosthesis was inserted into the femoral cavity, and the filling result of the custom prosthesis in femoral cavity was analyzed.

RESULTS AND CONCLUSION: The experiment results showed that the customized prosthesis in femoral cavity achieved good filling result, the structure of femoral cavity resisted the rotation of the customized prosthesis in femoral cavity, and the customized prosthesis obtained stable fixation in the femoral cavity.

中国组织工程研究杂志出版内容重点：人工关节；骨植入物；脊柱；骨折；内固定；数字化骨科；组织工程

全文链接：

Key words: bioprosthesis, prosthesis design, computer-assisted design, imaging, three-dimensional

CLC Number:

R318

Han Wen-long, Zhu Jian-fei, Wu Qi, Liu Chang-hua, Wang Ai-min, Xi Wen-ming. Design and fabrication of uncemented femoral prosthesis using CAD/CAM/Robotic integration method[J]. Chinese Journal of Tissue Engineering Research, 2014, 18(40): 6413-6418.

Figures/Tables 1

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