Oh S J, Demirci M, Dajani B, Melo A C, Claussen G C
Department of Neurology, University of Alabama at Birmingham, The Veterans Affairs Medical Centre, UAB Station, Birmingham, Alabama 35294, USA.
Muscle Nerve. 2001 May;24(5):689-94. doi: 10.1002/mus.1056.
The superficial peroneal nerve subserves sensation on the entire surface of the dorsum of the foot, except in small areas. All previously reported techniques for evaluating nerve conduction along this nerve tested a proximal portion of the nerve. We report a new method for evaluating sensory nerve conduction of the four branches of the distal superficial peroneal nerve. Two branches to the second and third toes of the medial dorsal cutaneous nerve and two branches to the fourth and fifth toes of the intermediate dorsal cutaneous nerve were studied orthodromically and antidromically in 37 feet of 21 normal volunteers using surface stimulating and recording electrodes and with a distance of 10 cm between the stimulating and recording electrodes. Maximum nerve conduction velocities (NCV) ranged from 41.8 to 46.9 m/s, and mean response amplitude ranged from 6.5 to 7.6 microV with the orthodromic technique. Values for NCV were almost identical when elicited by antidromic and orthodromic techniques, but response amplitudes were higher with the antidromic technique. Mean amplitudes of the distal superficial peroneal nerve were about 50% of the proximal superficial peroneal, and the conduction velocity in the distal superficial peroneal was slower than that in the proximal superficial peroneal nerve, by 8-14 m/s. In seven cases, distal superficial peroneal neuropathy was confirmed with this technique: two with proper digital neuropathy, two with medial dorsal cutaneous neuropathy, and three with intermediate dorsal cutaneous neuropathy.
腓浅神经支配足背整个表面的感觉，但有小面积区域除外。所有先前报道的评估该神经神经传导的技术均测试神经的近端部分。我们报告一种评估远端腓浅神经四个分支感觉神经传导的新方法。使用表面刺激电极和记录电极，在21名正常志愿者的37只足中，对内侧足背皮神经至第二和第三趾的两个分支以及中间足背皮神经至第四和第五趾的两个分支进行了顺行和逆行研究，刺激电极与记录电极之间的距离为10 cm。顺行技术下，最大神经传导速度（NCV）范围为41.8至46.9 m/s，平均反应幅度范围为6.5至7.6 μV。逆行和顺行技术引出的NCV值几乎相同，但逆行技术的反应幅度更高。远端腓浅神经的平均幅度约为近端腓浅神经的50%，远端腓浅神经的传导速度比近端腓浅神经慢8 - 14 m/s。在7例病例中，该技术确诊为远端腓浅神经病变：2例为趾固有神经病变，2例为内侧足背皮神经病变，3例为中间足背皮神经病变。
