一种准确的脚螺杆导航的新方法
Daniel Suter1,2, Aidana Massalimova3, Christoph Johannes Laux4
1Research in Orthopedic Computer Science, University Hospital Balgrist, University of Zurich, Forchstrasse 340, Zurich, 8008, Switzerland. dapesu@bluewin.ch.
Scientific reports
|March 13, 2025
概括
使用螺丝尖点 (STP) 和中点 (MP) 参考点的新脚踏螺丝导航方法提高了准确性. 这些技术提供了更大的轨迹范围和更好的螺丝放置,即使有入口点偏差,提高了外科安全.
科学领域:
- 脊柱外科手术 脊柱外科手术
- 手术导航手术导航手术导航
- 骨科生物力学 骨科生物力学
背景情况:
- 脚踏螺旋导航的已建立的规划和对齐 (PA) 方法依赖于参考患者解剖学进行轨迹和入口点 (EP) 规划.
- 偏离计划中的EP可能会损害最终的螺丝位置,可能导致不良结果.
- 需要更强大的导航技术来应对入口点的不准确性.
研究的目的:
- 为了研究入口点偏差对踏板螺杆放置精度的影响.
- 评估两个新的参考点的有效性:螺丝尖点 (STP) 和中点 (MP),作为传统PA方法的替代方案.
主要方法:
- 使用计算机模拟来评估新的STP和MP导航方法的性能.
- 适应的螺丝轨迹被定义为从所选的 EP 到 STP 或 MP 的方向向量.
- 导航技术进一步使用幻骨模型进行验证,以分析在EP偏差的情况下的螺丝精度.
主要成果:
- 与PA方法相比,STP和MP方法的可实现螺丝轨迹数量显著增加 (p < 0.01).
- 即使有4.5毫米的EP偏差,新的技术也允许在直径为4.9毫米的螺丝上放置无孔的螺丝.
- 使用PA方法模拟的穿孔主要是侧向的,从中部脚壁的中位距离为8.45毫米.
结论:
- 传统的PA导航方法对入口点偏差敏感.
- STP和MP参考点方法代表了显著的改进,在踏板螺杆导航中提供了更高的准确性和更大的安全空间.
- 这些新技术有望提高脊柱仪器仪表程序的可靠性和安全性.
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