中文摘要：

背景：虚拟现实技术在医疗研究中的应用,可有效的降低手术风险,提高手术质量,在外科手术中的应用有很重要的现实意义。目的：采用逆向工程及虚拟现实技术对1例Pilon骨折患者的脚踝进行三维数字化重构及术前模拟。方法：利用患者脚踝部的CT扫描数据在MIMICS软件中对患处进行了三维重建,并对骨折形成的碎骨进行了分离;利用Geomagic Studio软件根据虚拟现实操作平台的要求对碎骨模型进行了进一步处理后导出STL格式文件,将其导入虚拟现实操作平台进行复位以检查碎块提是否完整;利用虚拟现实操作平台进行模拟手术。结果与结论：采用逆向工程与虚拟现实技术实现了1例Pilon骨折病例的术前模拟。将处理后的三维模型导入虚拟现实系统中,进行模拟手术,帮助医生选择手术入路和接骨板的种类、位置及方向,效果良好。

英文摘要：

BACKGROUND： The application of virtual reality technology in preoperative simulation can reduce the risk in operation effectively and improve the quality of surgery. Virtual reality technology has very important practical significance in the application of surgery.OBJECTIVE： The reverse engineering and virtual reality technology were used to achieve the preoperative simulation of a case of Pilon fracture. METHODS： The affected bones were reconstructed according to the CT data using the patient＇s ankle portion inMIMICS software, and the separated bone fractures were restored. According to the characteristics of virtual reality technology, further processing on bone model was carried out using Geomagic software; the models of the fractured bones were exported with STL format. The restored bone fragments were checked up to determine integrity in the virtual reality operation platform. These models were used to do simulated operations in the virtual reality operation platform. RESULTS AND CONCLUSION： A case of Pilon fracture was simulated by using reverse engineering and virtual reality technology preoperatively. The processed 3D model was introduced into the virtual reality system to simulate the operation and help doctors choose the type, position and direction of the surgical approach and plate; the effect is good.