Department of Rehabilitation Medicine, Yeouido St Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, South Korea.
Muscle Nerve. 2012 Nov;46(5):711-6. doi: 10.1002/mus.23503.
The aim of this study was to determine normal reference values for cross-sectional area (CSA) and the correlation between demographic factors and CSA in the cervical roots and brachial plexus trunks using ultrasonography.
Ninety-five age-matched healthy individuals were studied. Ultrasonographic tests were performed via nerve tracing from the cervical root to the brachial plexus trunk. The CSA of each nerve was measured in the C5-8 ventral roots and brachial plexus (trunk level).
Normal values of each cervical root were: C5, 5.66 ± 1.02 mm(2); C6, 8.98 ± 1.65 mm(2); C7, 10.43 ± 1.86 mm(2); and C8, 10.76 ± 2.02 mm(2). Values for the brachial plexus were: upper trunk, 16.70 ± 2.88 mm(2); middle trunk, 14.01 ± 2.70 mm(2); and lower trunk, 13.75 ± 2.57 mm(2). The side-to-side discrepancy was 11.91 ± 11.11%. Body mass index (BMI) and height correlated frequently with nerve CSA.
These reference values may be helpful in investigating pathologies involving the cervical area.
本研究旨在通过超声检查确定颈椎神经根和臂丛干的横截面积（CSA）的正常参考值，并分析其与人口统计学因素之间的相关性。
共纳入 95 名年龄匹配的健康个体。通过神经追踪法从颈椎神经根到臂丛干进行超声检查。在 C5-8 颈神经根和臂丛（干水平）测量每个神经的 CSA。
每个颈椎神经根的正常 CSA 值分别为：C5，5.66±1.02mm²；C6，8.98±1.65mm²；C7，10.43±1.86mm²；C8，10.76±2.02mm²。臂丛的 CSA 值分别为：上干，16.70±2.88mm²；中干，14.01±2.70mm²；下干，13.75±2.57mm²。左右侧差异为 11.91±11.11%。体重指数（BMI）和身高与神经 CSA 相关性较强。
这些参考值可能有助于研究涉及颈椎区域的病变。
