Second Department of Physical Medicine and Rehabilitation, Ankara Education and Research Hospital, Ankara, Turkey.
Muscle Nerve. 2013 Mar;47(3):396-402. doi: 10.1002/mus.23528. Epub 2012 Nov 21.
The aim of this study was to investigate factors affecting median nerve cross-sectional area (CSA) and determine a dependable swelling ratio (SR) calculation method.
Using ultrasonography, median nerve CSAs were measured at the tunnel inlet, midtunnel, and outlet, and at 4 cm and 12 cm proximal to the wrist. We used CSAmax as the largest of the tunnel measurements and calculated swelling ratios (SRs) by using the CSAmax. Sonographic measurements were correlated with electrophysiologic findings. We evaluated the effects of gender, weight, and height on median nerve thickness.
We studied 95 wrists of 55 CTS patients and 48 wrists of 27 volunteers. Gender, weight, and height had effects on certain median nerve CSA measurements. CSAmax, SRmax4, and SRmax12 had superior correlations with electrophysiologic findings. The correlation between 4-cm and 12-cm median nerve CSAs was statistically significant (r = 0.879 and P < 0,001).
We have developed a reliable SR method considering factors affecting median nerve CSA.
本研究旨在探讨影响正中神经横截面积（CSA）的因素，并确定一种可靠的肿胀比（SR）计算方法。
使用超声测量腕管入口、中段和出口以及腕部近端 4cm 和 12cm 处的正中神经 CSA。我们将 CSAmax 作为隧道测量的最大值，并使用 CSAmax 计算肿胀比（SR）。超声测量与电生理发现相关。我们评估了性别、体重和身高对正中神经厚度的影响。
我们研究了 55 例 CTS 患者的 95 只手腕和 27 名志愿者的 48 只手腕。性别、体重和身高对某些正中神经 CSA 测量值有影响。CSA max、SR max4 和 SR max12 与电生理发现具有更好的相关性。4cm 和 12cm 处正中神经 CSA 之间的相关性具有统计学意义（r = 0.879，P < 0.001）。
我们考虑了影响正中神经 CSA 的因素，开发了一种可靠的 SR 方法。
