FINITE ELEMENT MODEL OF STABILIZED CANINE CERVICAL SPINE: TITANIUM IMPLANT

稳定犬颈椎的有限元模型：钛植入物

• 批准号: 6282564
• 负责人: RICHARD T HART
• 金额: $ 1.19万
• 依托单位: MELLON PITTS CORPORATION (MPC CORP)
• 依托单位国家: 美国
• 财政年份: 1998
• 资助国家: 美国
• 起止时间: 1998-08-01 至 1999-07-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/6282564
• 关键词: animal tissue; bioengineering /biomedical engineering; biomedical resource; nervous system; prosthesis; rehabilitation; skeletal system

This investigation intends to correlate titanium alloy plate strain and screw plate interface with titanium alloy metal ion release from posterior cervical spine implants in a dog model. It is believed that the magnitude of implant strain can influence the amount of metal released into the surrounding tissues and, in turn, that the concentration of material in the tissue will influence the implant's biological performance. Relative micromotion between various parts of the implant may accelerate the release of metal from the implant. As part of this investigation, a three-dimensional finite element model of the canine cervical spine segments(C3-C6), plates and screws will be developed. The model accuracy will be established through a convergence test, and it will be validated by modeling bench test loading schemes of ex-vivo specimens with strain gaged implants. The model will then be loaded as closely as possible to physiological conditions to depict the functional strain distributions. Contact stresses between the plate and bone and plate and screws will be examined. Finally, the results of the finite element model will be compared to the distributions of metal concentration found in the tissue.

本研究拟对钛合金板进行相关分析