【摘要】 目的探讨基于骨肿瘤患者CT扫描的人工髋、膝关节假体计算机辅助三维个性化设计方法和手术效果。方法选取股骨恶性骨肿瘤患者,进行CT扫描,三维重建,计算机辅助术前规划、模拟手术和假体三维设计,发送STL文件定制个性化假体。依据术前规划进行保肢手术,观察手术效果。结果设计并定制了带定位标识的个性化人工股骨柄肿瘤假体和人工膝关节铰连式肿瘤假体,手术瘤骨切除彻底、假体安装顺利、位置合适,术后双下肢等长。结论基于CT重建能设计出带标识个性化人工关节肿瘤假体,有利于保肢手术精确恢复下肢长度和精确安装假体位置。更多还原

【Abstract】 Objective To discuss computer-assisted three-dementional(3-D) design of personalized hip or knee prosthesis,which is bassed on CT scan of patients with bone tumor and assess its efficacy in operation. Methods Patients with malignant bone tumor were selected to undergo CT scan, 3D reconstruction, computer-aided preoperative planning, simulated operation and prosthesis designs. The STL files of the designs were sent to customise personalized prosthesis. The limb salvage operation was carried out based on preoperative planning. The operation effects were observed. Results An artificial femoral tumor prosthesis with a positioning mark and a hinged type knee tumor prosthesis were successfully designed and custom made. The operations were successful in tumor bone resection, prosthesis installation; the limb length of prosthesis side was equal to the healthy side. Conclusions The individualized artificial joint tumor prosthesis with positioning mark can be designed based on CT scan and reconstruction. It can benefit limb salvage operation in accurate restoration of limb length and precise installation of prosthesis.更多还原