在亚洲人群中,骨-骨重叠比率和下肢扭转之间的关系
Ashton Kai Shun Tan1, Xinyu Tao1, Shao Jin Teo1
1Department of Orthopaedic Surgery, Singapore General Hospital, Singapore.
The Knee
|February 4, 2026
概括
长腿X射线影像上的状骨重叠比率可以有效地选膝关节骨关节炎患者的状骨扭曲. 比率<0.5或>0.8需要进一步评估骨扭转.
科学领域:
- 整形外科手术 整形外科手术
- 放射学 放射学是一门学科.
- 生物机械分析 生物机械分析
背景情况:
- 下肢扭伤影响膝盖冠状元对齐测量对于膝盖骨关节炎 (KOA) 手术规划至关重要.
- 目前用于扭力评估的计算机断层扫描 (CT) 扫描是昂贵的,并不普遍适用.
- 开发具有成本效益的扭转评估成像方法对于KOA管理至关重要.
研究的目的:
- 为了研究长腿X射线影像上骨重叠比率与CT测量的骨/大腿扭曲之间的相关性.
- 评估骨重叠比率作为亚洲KOA群体骨扭曲查工具的有用性.
主要方法:
- 对217名接受膝关节关节整形手术的KOA患者的回顾性分析.
- 在承载重量的长腿X射线影像上测量状骨重叠比率.
- 使用CT扫描 (李和双角方法) 来量化股骨和骨扭动.
- 统计分析包括斯皮尔曼相关性和接收器运行特征 (ROC) 曲线分析.
主要成果:
- 在骨重叠比率和骨扭转之间发现了中等的正相关性 (ρ = 0.54,P < 0.001).
- ROC分析表明,重叠比率有很好的预测下降的骨扭转能力 (AUC 0.91) 和增加扭转能力 (AUC 0.77) 的可接受能力.
- 确定了最佳切线值:<0.5对于低骨扭曲 (99%的灵敏度,82%的特异性) 和>0.8对于高骨扭曲 (76%的灵敏度,71%的特异性).
结论:
- 长腿X射线影像上的骨交叠比率是KOA患者骨扭曲变形的宝贵查工具.
- 建议对骨扭曲进行进一步评估,对于骨重叠比率<0.5或>0.8.8的患者.
- 这种非侵入性方法为KOA的初始扭转评估提供了具有成本效益的替代方案.
相关概念视频
01:16Torsion of Noncircular Members
586
Circular shafts undergoing torsional stress maintain their cross-sectional integrity due to their axisymmetric nature. This symmetry ensures an even distribution of stress, allowing the shaft to withstand torsion without distorting. In contrast, square bars, lacking this axial symmetry, experience significant distortion across their cross-sections when subjected to torsion, with the exception of along their diagonals and at lines connecting midpoints. A detailed examination of a cubic element...
586
01:09Torsional Pendulum
7.4K
A torsional pendulum involves the oscillation of a rigid body in which the restoring force is provided by the torsion in the string from which the rigid body is suspended. Ideally, the string should be massless; practically, its mass is much smaller than the rigid body's mass and is neglected.
As long as the rigid body's angular displacement is small, its oscillation can be modeled as a linear angular oscillation. The amplitude of the oscillation is an angle. The role of mass is played...
As long as the rigid body's angular displacement is small, its oscillation can be modeled as a linear angular oscillation. The amplitude of the oscillation is an angle. The role of mass is played...
7.4K
01:20Bending and Torsional Moments
5.8K
Bending and torsional moments are two fundamental concepts in structural engineering. They play an important role in understanding the behavior of materials and structures under different loading conditions.
The reaction developed in a structural element when subjected to an external force causes the element to bend. When a structural element bends upwards, it creates compressive normal forces on the top and tensile normal forces on the bottom, resulting in a couple that determines the bending...
The reaction developed in a structural element when subjected to an external force causes the element to bend. When a structural element bends upwards, it creates compressive normal forces on the top and tensile normal forces on the bottom, resulting in a couple that determines the bending...
5.8K
02:12Relationship Formation
46.2K
What do you think is the single most influential factor in determining with whom you become friends and whom you form romantic relationships? You might be surprised to learn that the answer is simple: the people with whom you have the most contact. This most important factor is proximity. You are more likely to be friends with people you have regular contact with. For example, there are decades of research that shows that you are more likely to become friends with people who live in your dorm,...
46.2K
01:02¹H NMR: Interpreting Distorted and Overlapping Signals
1.5K
Spin systems where the difference in chemical shifts of the coupled nuclei is greater than ten times J are called first-order spin systems. These nuclei are weakly coupled, and their chemical shifts and coupling constant can generally be estimated from the well-separated signals in the spectrum.
As Δν decreases and the signals move closer, the doublets appear increasingly distorted. The intensities of the inner lines increase at the cost of those of the outer lines as the signals are...
As Δν decreases and the signals move closer, the doublets appear increasingly distorted. The intensities of the inner lines increase at the cost of those of the outer lines as the signals are...
1.5K
01:28Ending Relationships
194
The dissolution of intimate relationships presents complex emotional and psychological challenges, particularly when emotional bonds are strong, the relationship is long-standing, and perceived alternatives are limited. This distress often intensifies in romantic breakups, where the initiator may experience greater turmoil than the rejected partner. Contributing factors include residual attachment, guilt over causing pain, and uncertainty about how to manage the situation. The stress is further...
194