论文部分内容阅读
目的利用金属3D打印技术制作个性化枢椎椎弓根置钉导板,探讨其在低龄儿童上颈椎手术中的应用价值。方法选择1例游离齿状突合并寰枢椎脱位3岁患儿,术前行薄层CT扫描采集颈椎数据,将DICOM格式的CT数据输入计算机处理,设计出个性化置钉导板,采用金属3D打印技术制作实体导板并应用于临床手术。结果成功制作出与靶椎体高度匹配的金属置钉导板,并将其用于游离齿突合并寰枢椎脱位低龄患儿术中辅助置钉操作。术后内固定在位良好,寰枢椎脱位复位满意,随访6个月无复发脱位,植骨已融合。结论利用3D金属打印技术定制的手术导板具有良好的精度及机械性能,对辅助合并颅颈交界畸形的低龄儿童上颈椎螺钉置入手术具有一定的应用价值。
Objective To fabricate the personalized pedicle screw guide plate with metal 3D printing technology and explore its application value in the cervical spine surgery of young children. Methods One case of free odontoid process with atlantoaxial dislocation was selected in our study. Cervical spine data were acquired by thin-section CT scan before operation. The DICOM format CT data were input into the computer to design personalized nail guide plate. Metal 3D Print technology to create physical guide plate and applied to clinical surgery. Results The metal nail guide plate with high matching degree to the target vertebral body was successfully produced and used for assisted nailing operation in children with free tooth protrusion and atlantoaxial dislocation. Internal fixation in place was good, and atlantoaxial dislocation was satisfactory. There was no recurrence and dislocation at 6 months follow-up. The bone graft had been fused. Conclusion The customized surgical guide plate with 3D metal printing technology has good precision and mechanical properties. It has a certain value in the application of cervical spine screw placement in young children with craniocervical junction deformity.