大关节直线收角度与骨关节炎膝关节的冠状元对齐进展加速有关:对10,841个膝关节进行了纵向分析
Kee Soo Kang1,2, Sang Yoon Kim1,3, Byung Sun Choi1,3
1Department of Orthopaedic Surgery, Seoul National University Hospital, Seoul, Republic of Korea.
概括
大约三分之一的瓦鲁斯膝盖和四分之一的瓦尔古斯膝盖显示出加速的对齐变化. 基线对齐,关节线收角度和骨关节炎的严重程度预测了更快的进展,确定了膝关节骨关节炎的潜在表型.
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.
- 生物机械工程 生物机械工程
背景情况:
- 冠状膝盖对齐在骨关节炎 (OA) 进展中至关重要.
- 在OA中冠状元对齐变化的速度尚未被系统评估.
- 了解对齐改变是预测OA进展和指导治疗的关键.
研究的目的:
- 根据关节 - 膝关节 - 脚角 (HKAA) 变化速率对膝关节四肢进行分类.
- 确定与膝盖OA加速冠状元对齐进展相关的因素.
主要方法:
- 分析了10,841个肢体,使用站立的长腿X射线图.
- 调整参数和凯尔格伦-劳伦斯 (K-L) 等级的测量.
- 根据基线HKAA (,中性,) 分组四肢,并定义加速进展 (≥0.50°/年).
主要成果:
- 加快的骨进展发生在34.0%的骨肢体中;加快的骨在25.7%的骨肢体中.
- 在肢中,较大的基线直线,中位近角和关节直线收角 (JLCA) 增加了加速进展的几率.
- 较高的K-L等级显着与加速形进展的风险增加相关;基线HKAA和中部开放的JLCA预测了加速形进展.
结论:
- 有很大比例的膝盖与基线瓦鲁斯或瓦尔古斯对齐呈现加速进展.
- 基线HKAA,JLCA和K-L等级与加速的冠状元对齐变化有关.
- 这些因素可能有助于识别膝关节OA的表型,与快速对齐恶化.
相关概念视频
01:23Knee Joint
3.1K
The knee joint is the most complicated joint in the body. It consists of three articulations– two tibiofemoral and one patellofemoral. As is characteristic of synovial joints, the knee joint has a thin articular capsule that partially surrounds this joint cavity. Additionally, several ligaments, muscles, and cartilaginous structures support the movement of the knee.
A total of seven ligaments support the knee joint. The patellar ligament, which is also attached to the quadriceps femoris...
A total of seven ligaments support the knee joint. The patellar ligament, which is also attached to the quadriceps femoris...
3.1K
01:54Convergent Evolution
31.7K
Evolution shapes the features of organisms over time, ensuring that they are suited for the environments in which they live. Sometimes, selection pressure leads to the rise of similar but unrelated adaptations in organisms with no recent common ancestors, a process known as convergent evolution.
31.7K
02:20Longitudinal Research
13.2K
Sometimes we want to see how people change over time, as in studies of human development and lifespan. When we test the same group of individuals repeatedly over an extended period of time, we are conducting longitudinal research. Longitudinal research is a research design in which data-gathering is administered repeatedly over an extended period of time. For example, we may survey a group of individuals about their dietary habits at age 20, retest them a decade later at age 30, and then again...
13.2K
01:10Relative Motion Analysis - Acceleration
853
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...
853
01:17Region of Convergence
914
The z-transform is a powerful mathematical tool used in the analysis of discrete-time signals and systems. It is a crucial tool in the analysis of discrete-time systems, but its convergence is limited to specific values of the complex variable z. This range of values, known as the Region of Convergence (ROC), is fundamental in determining the behavior and stability of a system or signal. The ROC defines the region in the complex plane where the z-transform converges, which can take various...
914
01:22Relative Motion Analysis using Rotating Axes - Acceleration
774
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...
774