相关实验视频
Updated: Jun 26, 2026

06:24
A Spine Robotic-Assisted Navigation System for Pedicle Screw Placement
Published on: May 11, 2020
8.7K
螺丝/踏板宽度比率和导航与3D控制的光学引导踏板螺丝放置中的精度的分析
Jula Gierse1,2, Felix Zimmermann1,2, Paul A Grützner1,2
1BG Klinik Ludwigshafen, Department for Orthopedics and Trauma Surgery at Heidelberg University, Ludwigshafen, Germany.
Global spine journal
|May 19, 2025
概括
计算机导航显著提高了脚螺丝放置的准确性,并允许在脊柱外科手术中选择更大的螺丝. 与光镜指导相比,这种技术可以提高结果,而不会增加辐射暴露或手术时间.
科学领域:
- 脊柱外科手术 脊柱外科手术
- 整形外科手术 整形外科手术
- 神经外科 神经外科
- 医学成像医学成像
- 手术导航手术导航手术导航
背景情况:
- 在脊椎手术中,准确的脚螺丝位置至关重要,以避免神经血管损伤.
- 较大的脚螺丝提供了生物力学优势,但增加了穿孔风险.
- 术内成像和导航系统旨在平衡螺丝尺寸和位置精度.
研究的目的:
- 为了比较螺丝直径/脚宽度比率 (SPR) 和3D光学引导和计算机导航的跨脚螺丝在胸椎和腰椎的位置之间的螺丝放置精度.
- 为了评估两种技术之间的辐射剂量和手术时间的差异.
主要方法:
- 追溯队列研究分析了200例 (100例是光学指导,100例是计算机导航) 胸部和腰部脚螺丝放置的病例.
- 螺丝精度,SPR,辐射剂量 (剂量区域产物),光镜时间和手术时间的比较.
- 在光镜组中使用了手术内3D扫描来确认和潜在的修订.
主要成果:
- 与光镜指导相比,计算机导航导致螺丝精度 (90.5% vs 83.2%) 和SPR (0.88 vs 0.85) 显著提高 (P < .001).
- 导航组的产品剂量显著降低 (20,638比28,545mGycm2),光镜时间 (92.3比223.6秒),以及手术时间 (119.7比154.0分钟) (P<.001).
- 总共分析了716个光学引导螺丝和740个导航螺丝.
结论:
- 在手术内导航可以提高脊柱外科手术中脚螺杆位置的准确性.
- 导航方便使用相对于脚宽度较大的螺丝,可能改善生物力学稳定性.
- 与一些预期相反,与光镜指导相比,导航并没有增加患者的辐射暴露或程序时间.
相关概念视频
Relative Motion Analysis using Rotating Axes - Acceleration
Consider a component AB undergoing a linear motion. Along with a linear motion, point B also rotates around point A. To comprehend this complex movement, position vectors for both points A and B are established using a stationary reference frame. The absolute velocity of point B is determined by adding the absolute velocity of point A, the relative velocity of point B in the rotating frame, and the effects caused by the angular velocity within the rotating frame.
Time differentiation is...
Time differentiation is...
Beams with Unsymmetric Loadings
Analyzing a supported beam under unsymmetrical loadings is essential in structural engineering to understand how beams respond to varied force distributions. This analysis involves calculating the deflection and identifying points where the slope of the beam is zero, which are crucial for ensuring structural stability and functionality.
The first moment-area theorem determines the slope at any point on the beam. This theorem indicates that the change in slope between two points on a beam...
The first moment-area theorem determines the slope at any point on the beam. This theorem indicates that the change in slope between two points on a beam...
Distance Corrections
To achieve precise distance measurements, especially in surveying and construction, certain corrections must be applied to account for potential sources of error like the standardization errors, temperature variations, and slope adjustments.Standardization error emerges when measurement equipment undergoes changes, such as wear, repairs, or weather impacts. To address this, surveyors compare the equipment’s readings to a standard. This process identifies any deviation that might lead to...
Influence of Earth's Curvature and Atmospheric Refraction on Leveling
During leveling, the Earth's curvature and atmospheric refraction introduce deviations in the line of sight from a true horizontal reference. When the line of sight is leveled, it remains perpendicular to the plumb line only at a single point. Beyond this, it deviates due to the Earth’s curvature, represented by the correction C. For a sight distance D, the deviation can be derived using the relationship:This relationship shows that the deviation increases quadratically with distance. Over a...
Common Leveling Mistakes and Errors
A survey team is tasked with determining the elevation difference between points Point A and Point B, separated by uneven terrain. They use a leveling instrument and a leveling rod.Common MistakesMisreading the Rod: During a backsight reading at Point A, the instrumentman observes the rod partially obscured by tall grass. Instead of reading 1.135 m, they mistakenly record 1.735 m due to the misalignment of the crosshair with the wrong graduation. This error adds 0.600 m to all subsequent...
Adjusting a Traverse
In the site survey of a four-sided traverse, internal angles are essential to ensure geometric accuracy. The survey revealed that the sum of the measured internal angles was 359 degrees and 48 minutes, which is 12 minutes less than the expected 360 degrees. This discrepancy signals an error likely arising from measurement inaccuracies during the fieldwork.To rectify this error, the adjustment process involved distributing the 12-minute shortfall equally across the four internal angles. By...

