接骨螺钉的失效分析与强度测试

接骨螺钉作为一种有效的骨折内固定物，在临床上广泛使用。基于接骨螺钉的临床使用现状，分别按结构和材料归纳不同螺钉的种类，综合分析临床常见的3种螺钉失效情况（松动、断裂和腐蚀）以及影响因素，总结当前常用螺钉的测试方法，分析测试过程中的要点和难点，对改进产品设计、选择材料、开展体外检测技术等具有重要意义。对接骨螺钉测试方法的发展趋势进行展望。
As an effective implant for bone fracture, bone screws are widely used in clinic. Based on the clinical application of bone screws, this study summarized different kinds of bone screws according to their structures and materials, analyzed 3 kinds of common screw failure (loosening, breaking, corrosion) and the influencing factors. The common testing methods of screws were summarized, especially the key points and difficulties during the testing process for bone screws were analyzed, which was important for improving the design of product, selection of materials and development of in vitro testing technology. The development trend for testing method of bone screws was prospected as well.