基于骨折信息融合的混合现实技术引导骨盆螺钉植入的研究  

Preliminary study of pelvic screw insertion guided by mixed reality technology based on fracture information fusion

作　　者：陶星光 周凯华 何小健 潘福根 TAO Xingguang;ZHOU Kaihua;HE Xiaojian;PAN Fugen(Department of Orthopedics,Qingpu Branch of Zhongshan Hospital,Fudan University,Shanghai 201700,China)

机构地区：[1]复旦大学附属中山医院青浦分院骨科,上海201700

出　　处：《国际骨科学杂志》2022年第5期314-318,共5页International Journal of Orthopaedics

基　　金：上海市青浦区卫生健康委员会科研课题(W2020-08、W2019-40)。

摘　　要：目的研究基于骨折信息融合的混合现实技术引导骨盆通道螺钉精确植入的可行性。方法将5例髋臼T型骨折骨与周围软组织仿真模型制作成模拟改良Stoppa入路复位后的骨折模型,通过Mimics软件设计逆行耻骨上支螺钉通道,导入Hololens设备,通过基于骨折信息的虚实图像配准技术引导真实导针及螺钉的植入,每例模型辅助进行1枚逆行耻骨上支螺钉植入。术后通过CT图像测量评估与术前规划螺钉位置的差异。结果术后经CT检查验证,5例髋臼骨折模型耻骨上支逆行螺钉置入位置入钉点位移差为(3.30±0.67)mm,螺钉头位移差为(3.96±0.70)mm,空间角度误差为1.54°±0.27°,螺钉全部位于骨通道中,未穿出骨皮质。结论基于骨折信息融合的混合现实技术能够引导骨盆通道螺钉的精确置入,为骨盆置钉提供了一种新方法。Objective To study the feasibility of pelvic cannulated screw insertion guided by mixed reality technology based on fracture information fusion.Methods Five cases of an acetabular T-type fracture bone and surrounding soft tissue simulation model imitated fracture after reduction by the modified Stoppa approach.The retrograde suprapubic ramus screw channel was designed using Mimics software and imported into the HoloLens device.The implantation of real guide pins and screws was then guided by virtual-real image registration technology based on fracture information.One retrograde suprapubic ramus screw was implanted in each model.Postoperatively,differences in retropubic ramus retrograde screw positions from preoperative planning were assessed in the five cases by computed tomography measurements.Results The average displacement difference of the screw insertion point was(3.30±0.67)mm,the average displacement difference of the screw head was(3.96±0.70)mm,and the average error of the spatial angle was 1.54°±0.27°.All screws were located in the bone channel and did not penetrate the bone cortex.Conclusion Mixed reality technology based on fracture information fusion can guide the precise insertion of pelvic cannulated screws,which provides a new method for pelvic screw placement.

关 键 词：骨盆 髋臼 混合现实技术 螺钉 骨折 

分 类 号：R687.3[医药卫生—骨科学]