Department of Veterinary Surgery, College of Veterinary Medicine, Jeonbuk National University, Iksan 54596, Korea.
J Vet Sci. 2024 Nov;25(6):e74. doi: 10.4142/jvs.24207.
In veterinary orthopedics, addressing foramen stenosis in the L7-S1 region in dogs presents significant challenges due to limited access and visualization with conventional surgical techniques.
This study aims to evaluate endoscopic foraminotomy through the iliac window, using three-dimensionally (3D) printing guide based on the preoperative plan, in cadaveric dogs.
Trans-iliac foraminotomies were performed on each side of five canine cadavers using and individualized 3D printing guide. The intervertebral foramen (IVF) area was divided into entrance, middle, and exit zones and the trajectory angle was calculated from the computed tomography data.
Trans-iliac foraminotomy with an endoscope through the iliac hole using a 3D printed guide provide good visual access to the L7-S1 region. The variations in IVF in three zones were not significantly different after surgery. The angle of deviation of the guide was not significantly different caudally or ventrally after surgery. The mean trajectory angle after surgery was 14.06 ± 4.61°caudally and 13.07 ± 6.79° ventrally.
Our results suggest that surgical site were directly visualized during foraminotomy by the lateral approach through the spinal endoscope. However, other procedure including corpectomy and discectomy were not performed in this study.
在兽医骨科中，由于常规手术技术的有限进入和可视化，在犬的 L7-S1 区域解决孔狭窄是一个巨大的挑战。
本研究旨在评估通过髂骨窗进行的内镜下椎间孔切开术，使用基于术前计划的三维（3D）打印导向器。
在五具犬尸体的每一侧进行经髂骨孔的椎间孔切开术，使用个体化的 3D 打印导向器。椎间孔（IVF）区域被分为入口、中部和出口区，并从 CT 数据计算出轨迹角度。
使用 3D 打印导向器经髂骨孔的内镜下经髂骨孔椎间孔切开术为 L7-S1 区域提供了良好的可视通道。术后三个区域的 IVF 变化无显著差异。术后导向器的偏转角在尾侧或腹侧没有显著差异。术后平均轨迹角为 14.06±4.61°尾侧和 13.07±6.79°腹侧。
我们的结果表明，通过脊柱内窥镜的外侧入路，在椎间孔切开术中直接可视化手术部位。然而，在这项研究中没有进行其他手术，如椎体切除术和椎间盘切除术。
