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中文摘要：
目的研制一种新型人工颈椎间盘并评价其生物力学特点。方法设计一种新型4部件球窝关节人工颈椎间盘，使用新型低弹性模量钛合金（50Gpa）．TL医用聚醚醚酮制造，应用生物材料试验机分别进行轴向压缩刚度及疲劳检测，并对植入人工颈椎间盘后的羊颈椎标本进行运动学检测。结果新型人工颈椎间盘具备前屈、后仲、侧弯功能，经过生物力学检测，人工颈椎间盘符合人体力学要求，疲劳试验进行lxlO’次，未发生明显的损坏及变形。运动学研究表明植入羊颈椎标本后可以维持羊颈椎标本的运动学要求。结论新型人工颈椎间盘符合人体力学要求。
英文摘要：
Objective To develop a new type of artificial cervical intervertebral disc and investigate the biomechanical characteristics. Methods A new type of four-part ball and socket joint a_~ficial cervical disc was developed using a new low elastic modulus titanium （50 Gpa） and PEEK. Axial compression testing and fatigue testing was performed. In addition, kinematics analysis was carried out in sheep cervical specimens after receiv- ing artificial cervical disc implantation. Results The results showed that the new artificial cervical disc meets the ergonomic requirements with flex- ion, extension, and lateral bending functions. After 1 × 107 times of fatigue tests, no obvious damage or deformation was observed. Kinematics study also suggested that the cervical spine kinematics can be maintained in these sheep received cervical specimens implantation. Conclusion The new artificial cervical disc can satisfied the requirements in clinical applications.
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