School of Health Professions, Faculty of Health, Education and Society, Plymouth University, Plymouth, UK.
Ultrasound Med Biol. 2013 May;39(5):784-90. doi: 10.1016/j.ultrasmedbio.2012.11.023. Epub 2013 Mar 7.
Ultrasound imaging provides a method for non-invasive in vivo measurement of nerve motion resulting from joint movement. This study measured the proximal excursion of the tibial branch of the sciatic nerve at the popliteal fossa during forward bending in healthy subjects. Long-axis image sequences of the nerve were analysed using frame-by-frame cross-correlation software that calculated the longitudinal and axial movement of the nerve. Proximal excursion was calculated from the hypotenuse of these values. The mean proximal excursion recorded was 12.2 mm (SD 2.2 mm, n = 24). The reliability of three repeat measurements was found to be excellent (ICC 0.97, 95% CI 0.93-0.99; SEM 0.7 mm, n = 21). The protocol described provides a reliable method for analysing tibial nerve movement that could prove useful in future clinical studies.
超声成像是一种非侵入性的活体测量方法，可用于测量关节运动引起的神经运动。本研究在健康受试者中测量了膝关节窝处坐骨神经胫骨支在向前弯曲时的近端位移。使用逐帧互相关软件对神经的长轴图像序列进行分析，该软件计算了神经的纵向和轴向运动。近端位移是根据这些值的斜边计算的。记录的平均近端位移为 12.2 毫米（SD 2.2 毫米，n=24）。三次重复测量的可靠性被发现非常好（ICC 0.97，95%置信区间 0.93-0.99；SEM 0.7 毫米，n=21）。所描述的方案为分析胫骨神经运动提供了一种可靠的方法，这在未来的临床研究中可能很有用。
