3D打印技术在髋臼骨折术前评估中的应用

目的：探讨3D打印技术在髋臼骨折术前评估的临床应用价值。方法整群选取2014年1月—2015年6月对该院收治的7例髋臼骨折患者进行螺旋CT扫描，将其DICOM数据输入计算机中。应用3D打印技术打印骨折模型，将骨折模型与CT 3维重建影像进行比较，制定手术方案，随后实施手术，术后进行影像学检查，观察复位效果。与既往仅根据x线及CT 3维重建影像进行术前计划者对比术后复位效果。结果7例随访X线及CT显示关节面解剖复位5例，满意复位2例。与3维重建影像相比，可以更直观观察骨折块移位情况，在模型上可以模拟骨折复位情况，使术前计划更完善。结论3D打印技术应用有助于术者对髋臼骨折的理解和术前计划的制定，提高骨折复位质量。

Application of 3D Printing Technology in the Pre-operative Evaluation of Acetabular Fractures

Objective To explore the value of three dimension 3D printing technology in the pre-operation evaluation of ac-etabular fractures. Methods Convenient selection from January 2014 to June 2015, spiral CT scan was performed in 7 pa-tients with acetabular fracture. DICOM data were imported into Mimics software. The fracture models were printed out by 3D printing technology. Models and 3D reconstructed images were compared respectively. Operative planning was worked out, and then the operation was implemented. Postoperative reduction quality was assessed on radiographs and CT scan by observers. The results were compared with the planning that made on the basis of imaging. Results The follow up CT scan showed that 5 patients achieved anatomic reduction of articular surface, and 2 patients achieved satisfactory results. Com-parative result shows that surgeons with 3D technology can observe fractures visually and operations may be stimulated on modes. So pre-operative planning can be improved. Conclusion The 3D printing technology can help surgeons to under-stand about acetabular facture, and may be a powerful tool to work out preoperative planning. It can also improve reduction quality.