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背景:膝关节置换后,要求患肢达到负重,伸屈及旋转活动,稳定性好。这就要求假体的几何形状要与人体相匹配并使其植入后与人体运动规律相一致,才能使假体与周围保留的软组织协调运动,这一切都得依赖于精确的膝关节假体设计与制造。目的:利用计算机辅助技术设计个性化人工膝关节。方法:利用三维镭射扫描和计算机辅助设计技术对人体膝关节进行扫描并对所输出的点云数据进行处理,利用工程软件Geomagic和UG进行膝关节三维实体模型重建。结果与结论:得到了非常精确的膝关节三维模型。为中国人工仿生膝关节的数字化制造,虚拟装配,应力分析,运动分析及模拟手术提供了精确的模型基础。
Background: After the knee joint replacement, the limbs are required to achieve weight bearing, flexion and extension, and good stability. This requires that the geometric shape of the prosthesis should match the human body and make it consistent with the movement of the human body after implantation, so that the prosthesis can be moved in coordination with the surrounding soft tissues. All this depends on accurate knee prosthesis Design and manufacture. Objective: To design personalized artificial knee joint using computer aided technique. Methods: Three-dimensional laser scanning and computer-aided design techniques were used to scan the human knee joint and process the output point cloud data. Three-dimensional solid model reconstruction of knee joint was carried out by using engineering software Geomagic and UG. RESULTS AND CONCLUSIONS: A very accurate three-dimensional model of knee joint was obtained. It provides an accurate model foundation for digital manufacturing, virtual assembly, stress analysis, motion analysis and simulated surgery of artificial bionic knee joint in China.