3D打印个体化髋臼翻修假体设计及应用

Design and Application of 3D Printing of Personalized Acetabular Remodeling Prosthesis

目的通过使用数字化重建和3D打印技术,设计和制造个体化的髋臼假体,以满足临床对于特殊骨缺损治疗的需求,并探讨该技术在临床应用中的意义。方法采用Mimics和3-matic软件进行数字化重建和假体设计;依据患者CT数据,进行数据处理和重建,设计个体化的髋臼假体;集合髋臼缺损的类型、骨质修复需求,使用3D打印技术将设计好的假体转化为实体模型,并进行后续加工工艺。结果假体顺利安装及组配,术中假体匹配程度达到术前规划要求,且髋臼底部无法填充部分通过植骨恢复骨量并达到支撑效果;髋臼翻修假体一次性植入达到预设位置,髋臼外展及前倾角度符合术前设计要求;术后一周拍摄X片后,确定假体位置良好。结论个体化假体的应用为临床医学提供了一种新的方式,可满足特殊骨缺损患者的治疗需求,对于改善医疗实践、推动医学技术的发展具有重要意义。

Objective To design and manufacture personalized acetabular prostheses and explore the significance of this technology in clinical application using digital reconstruction and 3D printing technology to meet the clinical demands for treating specific bone defects.Methods Mimics and 3-matic software were utilized for digital reconstruction and prosthesis design.Based on patient CT data,the data was processed and reconstructed to design personalized acetabular prostheses.Combining the types of acetabular defects and bone reconstruction requirement,3D printing technology was used to transform the designed prosthesis into a solid model and conduct subsequent processing.Results The prosthesis was successfully installed and assembled,and the matching degree of prosthesis during the operation met the requirements of preoperative planning,and the unfilled part of the bottom of the acetabulum was restored by bone grafting and played a supporting effect.Once the acetabular remodeling prosthesis was implanted in the preset position,and the acetabular abduction and forward inclination angle met the requirements of preoperative design.X-rays taken one week after surgery determined that the implant was in good position.Conclusion The application of personalized prostheses provides a new approach in clinical medicine that can meet the treatment needs of patients with specific bone defects,and is of great significance for improving medical practice and promoting the development of medical technology.