Department of Hand Surgery, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya, 466-8550, Japan.
Department of Mechanical Engineering, Tokyo University of Science, Noda, Japan.
Sci Rep. 2021 Feb 25;11(1):4650. doi: 10.1038/s41598-021-84062-7.
The purpose of this study was to develop and evaluate a novel elbow arthroscopy system with superimposed bone and nerve visualization using preoperative computed tomography (CT) and magnetic resonance imaging (MRI) data. We obtained bone and nerve segmentation data by CT and MRI, respectively, of the elbow of a healthy human volunteer and cadaveric Japanese monkey. A life size 3-dimensional (3D) model of human organs and frame was constructed using a stereo-lithographic 3D printer. Elbow arthroscopy was performed using the elbow of a cadaveric Japanese monkey. The augmented reality (AR) range of error during rotation of arthroscopy was examined at 20 mm scope-object distances. We successfully performed AR arthroscopy using the life-size 3D elbow model and the elbow of the cadaveric Japanese monkey by making anteromedial and posterior portals. The target registration error was 1.63 ± 0.49 mm (range 1-2.7 mm) with respect to the rotation angle of the lens cylinder from 40° to - 40°. We attained reasonable accuracy and demonstrated the operation of the designed system. Given the multiple applications of AR-enhanced arthroscopic visualization, it has the potential to be a next-generation technology for arthroscopy. This technique will contribute to the reduction of serious complications associated with elbow arthroscopy.
本研究旨在开发和评估一种新型的肘关 节镜系统，该系统利用术前 CT 和 MRI 数据实现骨 骼和神经的叠加可视化。我们分别通过 CT 和 MRI 获得健康人志愿者和日本猴尸体肘部的骨骼和神经分割数据。使用立体光刻 3D 打印机构建了真人大小的 3D 器官和框架模型。在 20mm 镜体-目标距离处，检查了关节镜旋转时的增强现实 (AR) 误差范围。我们成功地使用真人大小的 3D 肘模型和日本猴尸体的肘部进行了 AR 关节镜检查，制作了前内侧和后外侧入路。相对于镜头圆筒从 40°到-40°的旋转角度，目标注册误差为 1.63±0.49mm（范围为 1-2.7mm）。我们获得了合理的精度，并展示了设计系统的操作。鉴于 AR 增强关节镜可视化的多种应用，它有可能成为关节镜的下一代技术。该技术将有助于减少与肘关 节镜相关的严重并发症。
