Segmental variations in facet joint translations during in vivo lumbar extension.
Segmental variations in facet joint translations during in vivo lumbar extension.
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DOI：
10.1016/j.jbiomech.2017.09.026
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发表时间：
2018-03-21
影响因子：
2.4
通讯作者：
Zhang X
中科院分区：
文献类型：
--
作者：
Byrne RM;Zhou Y;Zheng L;Chowdhury SK;Aiyangar A;Zhang X
腰椎小关节 (FJ) 通常与脊柱的发病机制相关，但正常 FJ 运动的量化仍然仅限于体外研究或非功能姿势的静态成像。本研究的目的是通过动态立体放射成像 (DSX) 成像来量化健康个体在功能活动期间的腰椎 FJ 运动学。十名无症状参与者在 DSX 系统内成像时将三个已知重量从躯干弯曲（约 75°）位置提升到直立位置。使用基于无标记模型的跟踪技术将高分辨率计算机断层扫描 (CT) 扫描衍生的腰椎 (L2-S1) 3D 模型注册到双平面 2D 射线照片上，在整个举升任务中提供瞬时 3D 椎骨运动学。使用混合效应重复测量方差分析评估节段水平和举重的影响。上下 (SI) 翻译主导 FJ 翻译，L5S1 显示的平移幅度明显小于 L2L3、L3L4 和 L4L5 段（Md 分别 = 5.9 mm、6.3 mm 和 6.6 mm）（中位数 (Md) = 3.5 mm，p < 0.0001）。基于线性回归的连续面平移斜率显示 SI 平移具有很强的线性度 (r2 > 0.94)，侧向滑动 (Z-) 的线性度相当高 (r2 > 0.8)，但面间隙变化 (X-) 的线性度要低得多 (r2 ~ 0.5)。尾部段 (L4-S1)，特别是 L5S1，与颅部 (L2-L4) 段相比表现出更大的耦合，揭示了 L5S1 的 FJ 翻译趋势总体上存在明显差异。没有检测到举重对 FJ 平移的显着影响。该研究提出了迄今为止无法获得的高度精确的在功能性动态提升任务期间测量的小平面平移基线数据集。
The lumbar facet joint (FJ) is often associated with pathogenesis in the spine, but quantification of normal FJ motion remains limited to in vitro studies or static imaging of non-functional poses. The purpose of this study was to quantify lumbar FJ kinematics in healthy individuals during functional activity with dynamic stereo radiography (DSX) imaging. Ten asymptomatic participants lifted three known weights starting from a trunk-flexed (~75°) position to an upright position while being imaged within the DSX system. High resolution computed tomography (CT) scan-derived 3D models of their lumbar vertebrae (L2-S1) were registered to the biplane 2D radiographs using a markerless model-based tracking technique providing instantaneous 3D vertebral kinematics throughout the lifting tasks. Effects of segment level and weight lifted were assessed using mixed-effect repeated measures ANOVA. Superior-inferior (SI) translation dominated FJ translation, with L5S1 showing significantly less translation magnitudes (Median (Md) = 3.5 mm, p < 0.0001) than L2L3, L3L4, and L4L5 segments (Md = 5.9 mm, 6.3 mm and 6.6 mm respectively). Linear regression-based slopes of continuous facet translations revealed strong linearity for SI translation (r2 > 0.94), reasonably high linearity for sideways sliding (Z-) (r2 > 0.8), but much less linearity for facet gap change (X-) (r2 ~ 0.5). Caudal segments (L4-S1), particularly L5S1, displayed greater coupling compared to cranial (L2-L4) segments, revealing distinct differences overall in FJ translation trends at L5S1. No significant effect of weight lifted on FJ translations was detected. The study presents a hitherto unavailable and highly precise baseline dataset of facet translations measured during a functional, dynamic lifting task.
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影响因子：
3
作者：
ADAMS, MA;HUTTON, WC
通讯作者：
HUTTON, WC
影响因子：
2.4
作者：
Aiyangar, Ameet;Zheng, Liying;Zhang, Xudong
通讯作者：
Zhang, Xudong
影响因子：
19.7
作者：
PATHRIA, M;SARTORIS, DJ;RESNICK, D
通讯作者：
RESNICK, D
DOI：
10.1097/00002517-200010000-00013
发表时间：
2000-10-01
期刊：
JOURNAL OF SPINAL DISORDERS
影响因子：
--
作者：
Fujiwara, A;Tamai, K;Saotome, K
通讯作者：
Saotome, K
影响因子：
2.4
作者：
Cavanaugh, JM;Ozaktay, AC;King, AI
通讯作者：
King, AI