动态光栅立体成像改善了对健康受试者的运动延迟和动态不对称的检测。

IF 2 Q2 ORTHOPEDICS Journal of Experimental Orthopaedics Pub Date : 2024-12-18 DOI:10.1002/jeo2.70115

Richard Julius Freytag, Jonas Wilhelm Moss, Filippo Maria Piana Jacquot, Jakob Zapatka, Rebecca Herrmann, Mahmoud Ragab, Sebastian Scheidt, Davide Cucchi

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引用次数: 0

摘要

目的：评估肩胛骨的运动学通常包括在运动过程中对患者进行视觉观察，这限制了观察者之间和观察者内部的可靠性。动态光栅立体成像（DRS）使用曲率图对身体表面的凸、凹和鞍形结构进行颜色编码，实时记录、测量和可视化表面结构。本研究旨在评估drs辅助观察在识别运动异常的肩胛骨胸椎模式中的诊断效果。方法：37名健康参与者在没有额外重量的情况下进行肩部外展/内收和屈伸循环，使用DRS和传统摄像机进行记录。节拍器确保了时间的一致性，而DRS则使用间接光学测量技术捕获了投射到背面的平行光线网格。平均表面曲率被转换成颜色标度。比较了传统视频和DRS视频在检测运动异常模式（包括静态不对称、动态不对称、运动延迟和快速代偿运动）方面的诊断性能。两名研究人员在盲法和随机序列中独立评估了两次视频，以评估判读器内和判读器间的可重复性。结果：对118个视频进行分析，两种技术的再现性均为良好至优异（ICCs为0.727 ~ 0.949）。在评估DRS视频时，运动延迟和动态不对称比传统视频更频繁地观察到（p = 0.0008和p = 0.0016）。然而，在静态不对称和快速代偿运动检测方面没有发现差异。结论：DRS可以建立躯干表面的实时模型，使观察者能够评估肩胛骨的运动，具有良好的关节内和关节间的可重复性；与临床观察相比，一些特定的肩胛骨运动改变可以更频繁地观察到。临床试验注册：DRKS00022334试验的一部分。证据等级：II级，前瞻性队列研究。

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Dynamic rasterstereography improves the detection of movement delays and dynamic asymmetries in the scapulothoracic kinematic of healthy subjects

Purpose

Assessing scapulothoracic kinematics typically involves visually observing patients during movement, which has limited inter- and intraobserver reliability. Dynamic rasterstereography (DRS) records, measures and visualizes surface structures in real time, using a curvature map to colour-code convex, concave and saddle-shaped structures on the body surface. This study aimed to evaluate the diagnostic efficacy of DRS-assisted observation in identifying dyskinetic scapulothoracic patterns.

Methods

Thirty-seven healthy participants performed shoulder abduction/adduction and flexion/extension cycles without additional weight, recorded using both DRS and a conventional video camera. A metronome ensured consistent timing, and for DRS a grid of parallel light rays projected onto the back surface was captured using indirect optical measurement techniques. The mean surface curvature was converted into a colour scale. The diagnostic performance of conventional and DRS videos in detecting dyskinetic patterns, including static asymmetries, dynamic asymmetries, motion delays and rapid compensatory movements, were compared. Two investigators independently evaluated the videos twice in a blinded and randomized sequence to assess intra- and interrater reproducibility.

Results

Analysis of 118 videos showed good-to-excellent intrarater and interrater reproducibility for both techniques (ICCs 0.727–0.949). Movement delays and dynamic asymmetries were observed more frequently when evaluating DRS videos rather than conventional videos (p = 0.0008 and p = 0.0016). However, no differences were found in static asymmetry and rapid compensatory movement detection.

Conclusions

DRS can create a real-time model of the trunk surface and allows observers to evaluate the scapular movements with good-to-excellent intrarater and interrater reproducibility; compared to clinical observation, some specific scapular motion alterations can be observed more frequently.

Clinical Trial Registration: Part of the DRKS00022334 trial.