相关实验视频
Updated: Aug 3, 2026

05:42
Dynamic Navigation for Dental Implant Placement
Published on: September 13, 2022
4.4K
三维导航用于塔洛卡卡内尔联盟切除:比较分析
Jacob Schaefer1, Emil Varas-Rodriguez1, Quinn Johnson1
1Department of Orthopedic Surgery, Mayo Clinic, Rochester, MN, 55905.
概括
与传统方法相比,3D导航可提供精确的指导,而不会增加手术时间或辐射暴露. 这种技术为手术时间,血液损失和住院时间提供了可比的结果.
科学领域:
- 整形外科手术 整形外科手术
- 医疗技术 医疗技术 医学技术
- 脚和脚手术 脚和脚手术
背景情况:
- 塔洛卡卡内尔 (TC) 联盟涉及塔卢斯和卡卡内斯之间的异常骨融合.
- 这种状况导致受限的部运动,慢性疼痛,反复出现的脚扭伤和硬的平脚.
- 目前的手术治疗涉及传统的开放切除技术.
研究的目的:
- 为了比较3D导航辅助切除与传统开放技术的疗效和结果,用于talocalcaneal联盟.
- 为了评估手术时间,流血,住院和两种手术方法之间的并发症.
主要方法:
- 进行了对经历了talocalcaneal联盟切除的患者的回顾性审查.
- 该研究包括使用3D导航的12名患者 (14英尺) 的队列和使用传统开放手术的4名患者 (5英尺) 的控制组.
- 分析的关键指标包括手术时间,麻醉时间,门时间,血液损失,住院,并发症和辐射剂量.
主要成果:
- 在操作时间,血液损失,住院时间,麻醉时间或导航组和传统组之间没有观察到统计学上显著的差异.
- 导航组显示了较短的术后固定化的趋势,尽管在统计学上并不显著.
- 在导航组中出现了两种并发症:肥胖患者的伤口愈合延迟和表面皮肤感染.
结论:
- 术内3D导航提供了精确的指导,用于talocalcaneal联盟切除,而不会显著增加手术时间.
- 导航方法证明了与传统的非导航方法相比,可比的手术时间,血液损失和住院时间.
- 3D导航为传统的手术内光学提供了一个精确的替代方案,具有可比的有效辐射剂量.
相关概念视频
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...
Design Example: Traverse Angle Computations
Traverse angle computations are a critical component of surveying, used to compute the internal angles within a closed traverse. A traverse consists of a series of connected lines forming a closed loop, often used for land boundary delineation or mapping. Calculating the internal angles ensures accuracy in the traverse geometry and is essential for checking survey data integrity.The process begins with known azimuths and bearings of the traverse sides. Internal angles at each vertex are...
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...
Design Example: Identifying the Locations of Monuments in the Field Using Global Positioning System Device
Surveyors use Global Positioning System (GPS) technology to measure the precise location and elevation of points on Earth. In a recent survey, GPS receivers were used to determine the coordinates and elevations of two park monuments. The process involved careful mission planning, data collection, and correction to ensure accuracy. The survey began with mission planning to identify optimal satellite visibility and minimize Position Dilution of Precision (PDOP). A geodetic control point served as...
Vectors in 2D: Problem Solving
A plane traveling due north at 180 km/h in still air was found to be 80 km off-course after 30 minutes, deviating approximately 5 degrees east of north. This deviation means the influence of a crosswind alters the plane’s intended trajectory. The actual ground path formed a diagonal, suggesting that the aircraft’s effective ground speed was reduced to 160 km/h and directed slightly to the east due to the wind.By analyzing the displacement from the intended path, the velocity contributed by the...
Real-World Applications of Space Curves
Modern aerospace navigation depends on the accurate prediction of motion in three-dimensional space. In defense applications, radar systems continuously track both interceptors and moving aerial targets to find whether their flight paths will result in a collision. These motions are modeled mathematically as space curves, which represent paths that change continuously with time. Each object’s position is described by a vector function that specifies its location in terms of time-dependent...

