使用负载计算机断层扫描进行膝关节骨和关节的客观测量的可重复性:三维量化骨矿物质密度,关节空间宽度和亚冠状骨板厚度
Tadiwa H Waungana1,2, Ria Mangat2, Chloe Chen2
1Department of Biomedical Engineering, University of Calgary, Calgary, AB T2N 4V8, Canada.
JBMR plus
|January 21, 2026
概括
负载CT (WBCT) 显示了高的可重复性来测量膝关节的骨密度,关节空间宽度和骨底骨板厚度. 这支持WBCT.
科学领域:
- 整形医学和生物医学成像学
- 骨关节炎研究 骨关节炎研究
- 定量骨和关节分析
背景情况:
- 膝关节关节炎 (OA) 涉及到骨和关节的结构变化.
- 骨下骨板厚度 (SBP.Th),骨矿物质密度 (BMD) 和关节空间宽度 (JSW) 等目标指标有助于OA评估.
- 承重CT (WBCT) 提供3D洞察力,但其可重复性用于跟踪OA进展需要调查.
研究的目的:
- 在健康成年人中使用WBCT评估BMD,JSW和SBP.Th测量的可重复性.
- 评估WBCT的可靠性,以对随时间推移的膝关节骨和关节参数进行定量评估.
主要方法:
- 从37名健康成年人获得同一天,扫描-重新扫描膝盖WBCT图像.
- 量化了椎骨的BMD,椎骨的JSW和SBP.Th.的数量.
- 使用变化系数 (CV_RMS%) 和最不显著变化 (LSC) 评估了测试重复测试的可重复性.
主要成果:
- 平均脊椎骨髓骨质量显示CV_RMS%为1.87%-2.85%和LSC为13.53-17.39 mgHA/cm3.
- 在JSW的测量中,CV_RMS% <1%和LSC <0.2mm的高可重复性得到证明.
- SBP.Th显示较高的CV_RMS% (9.75%-11.29%),但与JSW.Th相比,LSC值 (0.09-0.26毫米) 较高.
结论:
- 对于关键骨和关节参数,WBCT具有很高的可重复性,这些参数与膝关节OA相关.
- 这些发现支持WBCT在监测膝关节OA进展和指导治疗方面的潜力.
- 对于可靠的纵向研究,建议对WBCT采集和分析进行标准化.
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
01:31Essential Minerals for Bone Health
6.1K
The minerals contained in all of the food we consume are essential for our organ systems. However, certain essential minerals, such as calcium, phosphorus, magnesium, manganese, and fluoride, largely affect bone health.
Calcium and Phosphorus
Calcium is a critical component of bones, especially in the form of calcium phosphate and calcium carbonate. Since the body cannot make calcium, it must be obtained from the diet. However, calcium cannot be absorbed from the small intestine without...
Calcium and Phosphorus
Calcium is a critical component of bones, especially in the form of calcium phosphate and calcium carbonate. Since the body cannot make calcium, it must be obtained from the diet. However, calcium cannot be absorbed from the small intestine without...
6.1K
01:09Spongy Bone
7.6K
All bones comprise an outer layer of compact bone, and an interior made up of spongy bone tissue, also called cancellous or trabecular bone. In long bones, spongy bone tissue is mainly found in the interior of the epiphyses (broad ends of the bone).
Spongy bone is more porous, and less dense compared to compact bone. It is composed of concentric lamellae that are arranged irregularly to form the trabecular network. In some bones, the spaces between trabeculae contain red marrow, where...
Spongy bone is more porous, and less dense compared to compact bone. It is composed of concentric lamellae that are arranged irregularly to form the trabecular network. In some bones, the spaces between trabeculae contain red marrow, where...
7.6K
01:27Compact Bone
16.2K
Most bones contain compact and spongy osseous tissue, but their distribution and concentration vary based on the bone's overall function.
Compact bone, also called cortical bone, is the denser, stronger of the two types of bone tissue. It is found under the periosteum and in the diaphyses of long bones, where it provides support and protection. The microscopic structural unit of compact bone is called an osteon, or haversian system. Each osteon is composed of concentric rings of calcified...
Compact bone, also called cortical bone, is the denser, stronger of the two types of bone tissue. It is found under the periosteum and in the diaphyses of long bones, where it provides support and protection. The microscopic structural unit of compact bone is called an osteon, or haversian system. Each osteon is composed of concentric rings of calcified...
16.2K
01:29Bone Disorders
5.1K
Aging and its effect on bone remodeling is the most common cause of bone disorders. In young and healthy people, bone deposition and resorption happen at an equal rate to maintain optimal bone health.
Bone deposition is also affected by the levels of sex hormones like estrogen and testosterone that promote osteoblast activity and bone matrix synthesis. When the level of these hormones decreases due to aging, it causes a reduction in bone deposition. As a result, bone resorption by osteoclasts...
Bone deposition is also affected by the levels of sex hormones like estrogen and testosterone that promote osteoblast activity and bone matrix synthesis. When the level of these hormones decreases due to aging, it causes a reduction in bone deposition. As a result, bone resorption by osteoclasts...
5.1K
01:12The Hyoid Bone
4.8K
The hyoid bone is a small U-shaped bone located in the upper neck at the level of the inferior mandible, with its tips pointing posteriorly. It does not directly articulate with any other bone in the body. The hyoid acts as the attachment site for the tongue, the larynx, and the pharynx. It is held in position by a series of small muscles attached from above or below. These muscles help to move the hyoid up/down or forward/back in coordination with movements of the tongue, larynx, and pharynx...
4.8K