Ultrasonographic Reference Values for Assessing the Normal Median Nerve in Adults
Ultrasonographic Reference Values for Assessing the Normal Median Nerve in Adults
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DOI：
10.1111/j.1552-6569.2008.00256.x
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发表时间：
2009-01-01
影响因子：
2.4
通讯作者：
Walker, Francis O.
中科院分区：
文献类型：
--
作者：
Cartwright, Michael S.;Shin, Hae W.;Walker, Francis O.
有几项研究评估了正中神经在腕部的横截面积，但没有一项研究检查了正中神经沿着的其他部位。神经扩大已被证明在卡压，遗传性和获得性神经病，以及与神经内肿块，和横截面积参考值在网站沿着神经将有助于在这些条件的评估。此外，肌肉侵入腕管与腕管综合征有关，但是正常的肌肉侵入量还没有被量化。50名无症状的志愿者100只手臂，测量正中神经6个部位的平均横截面积和肌群侵入腕管的平均量，正中神经的横截面积沿着走行方向一致（7.5至9.8 mm（2））。腕管内的肌肉数量变化很大，屈趾肌的平均面积为15.5 mm（2），蚓状肌的平均面积为13.5 mm（2）。这些参考值对于推进神经肌肉超声领域是必要的，因为它们有助于研究正中神经在卡压、遗传性神经病变、获得性神经病变和神经内肿块等情况下的情况。J Neuroimaging 2009;19：47-51.
Several studies have evaluated the cross-sectional area of the median nerve at the wrist, but none have examined other sites along the median nerve. Nerve enlargement has been demonstrated in entrapment, hereditary and acquired neuropathies, as well as with intraneural masses, and cross-sectional area reference values at sites along the nerve will help in the evaluation of these conditions. In addition, muscle intrusion into the carpal tunnel has been implicated in carpal tunnel syndrome, but the normal amount of muscle intrusion has not been quantified.Fifty asymptomatic volunteers (100 arms) were evaluated to determine the mean cross-sectional area of the median nerve at 6 sites and the mean amount of muscle intruding into the carpal tunnel.The cross-sectional area of the nerve was consistent along its course (7.5 to 9.8 mm(2)). The amount of muscle within the carpal tunnel varied greatly, with the mean area of flexor digitorum being 15.5 mm(2) and lumbricals 13.5 mm(2).These reference values are necessary for advancing the field of neuromuscular ultrasound, because they facilitate studies of the median nerve in conditions such as entrapment, hereditary neuropathy, acquired neuropathy, and intraneural masses.J Neuroimaging 2009;19:47-51.