Laboratory of Analysis and Control of Upper Extremity Function, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan.
Department of Orthopedic Surgery, Nihon University Hospital, Tokyo, Japan.
PLoS One. 2021 Oct 20;16(10):e0258808. doi: 10.1371/journal.pone.0258808. eCollection 2021.
Previous studies have reported qualitative characteristics of myelopathy hand, but few studies have reported quantitative kinematic parameters of this condition. Our purpose of this study was to quantitatively evaluate the abnormal finger movements in patients with cervical compressive myelopathy (CCM) (termed myelopathy hand) and to understand the characteristics of myelopathy hand during the grip and release test (GRT) using gyro sensors. Sixty patients with CCM (severe: n = 30; mild-to-moderate: n = 30) and sixty healthy adults (age-matched control: n = 30; young control: n = 30) were included in this study. All participants performed the GRT. The index and little fingers' and the wrist's movements during the GRT were recorded using three gyro sensors. The number of cycles, switching time-delay, time per cycle, and peak angular velocity were calculated and compared between groups. Patients with severe CCM had the lowest number of cycles and longest switching time-delays, followed by patients with mild-to-moderate CCM, the age-matched control group, and the young control group. The time per cycle and the peak angular velocities of fingers in participants with severe CCM were significantly lower than those in participants with mild-to-moderate CCM; however, there were no significant differences between the control groups. The peak angular velocities of fingers were significantly lower during extension motions than during flexion motions in participants with CCM. Participants with CCM have lower peak angular velocities during finger movement. Finger extension also is impaired in participants with CCM. Abnormal finger movements and the severity of myelopathy in participants with CCM can be assessed using gyro sensors.
先前的研究已经报道了颈椎病手的定性特征，但很少有研究报告过这种情况的定量运动学参数。本研究的目的是使用陀螺仪传感器定量评估颈椎压迫性脊髓病（CCM）（称为脊髓病手）患者手指运动的异常，并了解握放试验（GRT）期间脊髓病手的特征。本研究纳入了 60 例 CCM 患者（重度：n = 30；轻度至中度：n = 30）和 60 名健康成年人（年龄匹配对照组：n = 30；年轻对照组：n = 30）。所有参与者均进行了 GRT。使用三个陀螺仪传感器记录食指和小指以及手腕在 GRT 期间的运动。计算并比较了各组之间的循环次数、切换时滞、每个循环的时间和峰值角速度。重度 CCM 患者的循环次数最少，切换时滞最长，其次是轻度至中度 CCM 患者、年龄匹配对照组和年轻对照组。重度 CCM 患者手指的每个循环时间和峰值角速度明显低于轻度至中度 CCM 患者；然而，对照组之间没有显著差异。CCM 患者手指在伸展运动中的峰值角速度明显低于弯曲运动。CCM 患者手指运动的峰值角速度较低。CCM 患者的手指伸展运动也受损。使用陀螺仪传感器可以评估 CCM 患者手指运动的异常和脊髓病的严重程度。
