使用动态关节镜评估验证状轨道概念
Mustafa S Rashid1, Saho Tsuchiya1, Kristie D More2
1Department of Surgery, Section of Orthopedic Surgery, McCaig Institute for Bone and Joint Health, University of Calgary, Calgary, Alberta, Canada.
Orthopaedic journal of sports medicine
|February 23, 2024
概括
在肩膀不稳定中评估Hill-Sachs病变的腺轨道概念显示中度准确性. 无论是3DCT还是静态关节镜方法,都需要外科医生对决策的谨慎使用.
科学领域:
- 整形外科手术 整形外科手术
- 运动医学运动医学
- 肩部不稳定性研究研究
背景情况:
- 在Bankart修复后,肩膀的反复不稳定性促使评估Hill-Sachs病变.
- 状腺轨道概念有助于将Hill-Sachs病变分类为"在轨"或"离轨",以指导治疗.
- 验证状轨道概念的准确性和可靠性对于手术决策至关重要.
研究的目的:
- 评估状腺轨道概念的准确性和可靠性.
- 为了比较Hill-Sachs病变参与的诊断方法.
- 通过动态关节镜评估来验证状腺轨道概念.
主要方法:
- 研究了一组49名患有复发性创伤前肩部不稳定的患者,他们正在接受Bankart修复.
- 用3D计算机断层扫描 (3DCT) 和静态关节镜测量来评估肩部的稳定性.
- 根据"运动姿势"的动态关节镜评估来验证分类,以评估Hill-Sachs病变的发生.
主要成果:
- 3DCT显示了比静态关节透视 (42%,59%) 更高的积极预测值 (66%) 和准确性 (65%).
- 与3DCT (64%,81%) 相比,静态关节镜显示出更高的负预测值 (96%) 和灵敏度 (96%).
- 在3DCT (α=0.368) 中,interrater可靠性是"相当"的,在静态关节镜检查中是"中等"的 (α=0.523);在3DCT (ICC=0.660) 中,intrarater可靠性是"中等"的,在静态关节镜检查中是"良好"的 (ICC=0.769).
结论:
- 3DCT和静态关节镜测量状腺轨道状态都提供了中等的准确性和可靠性.
- 外科医生在使用状腺轨道概念时应谨慎使用3DCT或静态关节镜测量进行外科决定.
- 可能需要进一步的研究来完善状轨道概念在管理肩部不稳定性的应用.
相关概念视频
Woodward–Hoffmann Selection Rules and Microscopic Reversibility
Electrocyclic reactions, cycloadditions, and sigmatropic rearrangements are concerted pericyclic reactions that proceed via a cyclic transition state. These reactions are stereospecific and regioselective. The stereochemistry of the products depends on the symmetry characteristics of the interacting orbitals and the reaction conditions. Accordingly, pericyclic reactions are classified as either symmetry-allowed or symmetry-forbidden. Woodward and Hoffmann presented the selection criteria for...
Relative Motion Analysis - Velocity
A stroke engine has a slider-crank mechanism that converts rotational motion from the crank into linear motion of the slider or vice versa. This mechanism consists of three main parts: the crank, the connecting rod, and the slider.
When an external force is exerted, it sets the crank into a rotational movement. This, in turn, instigates the motion of the connecting rod, leading to what is referred to as a general plane motion. This process involves two key points - point A on the connecting rod...
When an external force is exerted, it sets the crank into a rotational movement. This, in turn, instigates the motion of the connecting rod, leading to what is referred to as a general plane motion. This process involves two key points - point A on the connecting rod...
Relative Motion Analysis using Rotating Axes
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.
However, to express the relative position of point B relative to point A, an additional frame of reference, denoted as x'y', is necessary. This additional frame not only translates but also rotates relative to the fixed frame, making it instrumental in...
However, to express the relative position of point B relative to point A, an additional frame of reference, denoted as x'y', is necessary. This additional frame not only translates but also rotates relative to the fixed frame, making it instrumental in...
Relative Motion Analysis - Acceleration
A slider-crank mechanism converts rotational motion from the crank into linear motion of the slider or vice versa. This mechanism consists of three main parts: the crank, the connecting rod, and the slider. The movement of the slider-crank is an example of general plane motion as the fluctuating angle between the crank and the connecting rod. Consider a segment AB where point A is at the end of the slider and point B is on the diametrically opposite end to point A, on a crack. The variance in...
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...
Sight Distance in a Vertical Curve
Sight distance on vertical curves is critical in roadway design. It ensures drivers can see far enough ahead to identify and respond to hazards effectively. This directly impacts safety, driver comfort, and the overall efficiency of the transportation network.Vertical curves are classified into crest and sag curves based on their geometry. For crest curves, sight distance is determined by the line of sight between a driver's eye and a small object on the road's surface. Design parameters for...


