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Augmented Reality Based Surgical Navigation of the Periacetabular Osteotomy of Ganz - A Pilot Cadaveric Study

机译：基于增强基于GANZ的Periacetabular截骨术的外科手术导航 - 试验尸体研究

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Introduction: The periacetabular osteotomy of Ganz is one of the most demanding procedures in orthopaedic surgery and requires a profound three-dimensional understanding of the human anatomy. The use of augmented reality offers new possibilities for computer-assisted interventions. The aim of our study was to investigate if the navigation of the periacetabular osteotomy of Ganz by the Microsoft HoloLens is feasible in a pilot cadaveric study. Material and Methods: An augmented reality based registration and navigation method for the periacetabular osteotomy of Ganz was developed. The pelvic bone was registered using landmarks and surface digitization and the osteotomies as well as the reorientation of the acetabular fragment were guided holographically. An orthopedic surgeon performed the procedure under realistic operating room conditions on one human cadaver for evaluation. The performed osteotomy starting points, the angles between the corresponding connecting lines and the reorientation of the acetabular fragment were compared to the preoperative planning. Results: Distances between planned and performed osteotomy starting points were 12.3 mm, 1.4 mm, 3.0 mm and 9.6 mm. Projected angles between the connecting lines of planned and performed osteotomy starting points were 7.8°, 2.1° and 15.2°. The projected angle between supra-and retroacetabular osteotomy deviated 6.4° and the angle between retro- and infraacetabular osteotomy deviated 16.4° from the planning, respectively. Performed reorientation of the acetabular fragment was 3.3° (planned 10°) in the frontal and 2.1° (planned 15°) in the sagittal plane. Conclusion: The execution of complex osteotomies is feasible with navigation through the Microsoft HoloLens with a satisfying realization of the preoperative plan. Nevertheless, further work is needed to also improve the navigation of the reorientation of the acetabular fragment.
机译：介绍：Ganz的沉降截骨术是骨科手术中最苛刻的程序之一，并且需要对人解剖学的深刻三维理解。增强现实的使用为计算机辅助干预提供了新的可能性。我们的研究目的是调查Microsoft Hololens的GANZ的终止术骨质术的导航是否可行的试点尸体研究。材料和方法：开发了一种基于增强现实的基于现实的登记和导航方法，用于GANZ的Periacetabular截骨术。使用地标和表面数字化登记骨盆骨，并且截骨瘤以及髋臼片段的重新定位在时射起。整形外科医生在一个人类尸体上的现实手术室条件下进行了该程序进行评估。与术前规划相比，对相应的连接线和髋臼片段的重新定位之间的角度出发点进行了执行的截骨的起点。结果：计划和截骨术起点之间的距离为12.3毫米，1.4mm，3.0 mm和9.6mm。计划和执行截骨分子起点的连接线之间的投影角度为7.8°，2.1°和15.2°。截至规划分别偏离了6.4°之间的偏离了6.4°之间的突出角度和复古和眶下截骨术之间的角度。在矢状平面中进行了髋臼片段的髋臼片段的重新定向为3.3°（计划10°）和2.1°（计划15°）。结论：复杂截骨术的执行是可行的，通过微软挖掘机的导航，具有令人满意的术前计划的实现。然而，需要进一步的工作来改善髋臼片段的重新定向的导航。

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