3D打印模型联合AR导航模拟前交叉韧带股骨端定位点精确度的验证

摘要

目的 探讨及验证增强现实(AR)导航下前交叉韧带重建中股骨端隧道定位点的精确度与临床应用的可行性.方法 通过3D打印技术制作一个内设不同直径靶心的特制立方体模型作为穿刺模型;选取50名临床骨科医师,随机对每位医师进行编号(1～50号),按编号顺序进行AR导航下的穿刺定位点操作,最后进行AR导航的精准度和满意度调查分析.结果 AR导航下模拟临床前交叉韧带重建中股骨端隧道定位点精确度在各直径靶心内分别为:74％ (0.25 cm)、78％ (0.5 cm)、83％ (0.75 cm)、86％(1.0 cm)、89％(1.25 cm)、96％(1.5 cm);操作者满意度评分平均为(8.7±1.3)分.结论 AR导航下行前交叉韧带股骨端止点定位方法精确度较高,可实时观察定位点与周围邻近结构的位置关系,临床可行性高,适用于前交叉韧带重建术股骨端隧道定位点的确定.%Objective To investigate the precision and clinical practicability of anchor point locating under the guidance of augmented reality (AR) navigation for anterior cruciate ligament (ACL) reconstruction.Methods A cube model was made by 3D print which contained some concentric circles of different diameters to be the target.Fifty orthopedists were chosen and numbered from 1 to 50 to locate with AR guidance.Finally,the results of precision and score of satisfaction were analyzed.Results The location precision guided by AR in different diameter concentric circle were 74％ (0.25 cm),78％ (0.5 cm),83％ (0.75 cm),86％ (1.0 cm),89％ (1.25 cm),96％ (1.5 cm) respectively.The average satisfaction score of the orthopedists' was (8.7 ± 1.3).Conclusion Anchor point locating under the guidance of AR navigation is a feasible and effect method for clinical ACL reconstruction,which can observe the relations of the anchor point and the adjacent structure in real time.