前路经皮中空螺钉治疗ⅡB 型齿状突骨折虚拟手术的仿真设计

摘要

Objective Through the exploration of the reality technology to find the treatment of type Ⅱ odontoid fractures in anterior fixation of odontoid fractures with hollow screw .Methods Based on 64 row spiral CT continuous 2-dimensional images of akull ,atlas and axis were reconstructed by the Mimics software ,Mimics software reconstruction atlas ,the atlantoaxial 3D visualization structure in Mimics, simulated surgery was carried out in the MedCAD .Results The structure of three-dimensional reconstruction image was clear ,structure of hollow screw into pin-point was accurate in virtual simulation surgery ,the screw path is correct .Conclusion Mimics Software has great val-ues in the diagnosis of odontoid fractures ,preoperative risk evaluation ,place the hollow screw and clinical teaching ,which provides an objec-tive basis for choice of treatment program .%目的：探索虚拟现实技术来寻找一种实行前路经皮中空螺钉内固定治疗ⅡB型齿状突骨折的方法，发掘可视化虚拟手术对枢椎Ⅱ型齿状突骨折前路内固定的临床指导作用。方法将齿状突骨折患者的颈椎基于64排CT平扫得到连续薄层二维图像， Mimics软件分别重建寰椎、枢椎的三维可视化结构，在Mimics中的MedCAD版块中进行模拟手术。结果三维重建图像结构清晰，可真实再现寰枢椎细微的结构，虚拟仿真手术中螺钉进针点精确，钉道正确无误。结论利用计算机虚拟现实技术制订出最佳的前路经皮中空螺钉通道，在术前风险评估、中空螺钉放置及临床手术教学中有很大的应用价值。