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Technique for studying conduction in the lateral cutaneous nerve of calf
Author(s) -
Campagnolo Denise I.,
Romello Michael A.,
Park Yong I.,
Foye Patrick M.,
Delisa Joel A.
Publication year - 2000
Publication title -
muscle and nerve
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.025
H-Index - 145
eISSN - 1097-4598
pISSN - 0148-639X
DOI - 10.1002/1097-4598(200008)23:8<1277::aid-mus19>3.0.co;2-4
Subject(s) - orthodromic , antidromic , nerve conduction velocity , snap , anatomy , latency (audio) , electrophysiology , chemistry , medicine , computer graphics (images) , computer science , electrical engineering , engineering
We describe a novel technique for assessing conduction in the lateral cutaneous nerve of the calf (LCNC), a branch of the common peroneal nerve, based on a study of 32 healthy subjects. Both antidromic and orthodromic techniques were used in each of the 64 limbs to obtain a sensory nerve action potential (SNAP) of the LCNC over a distance of 12 cm. In 60 limbs (93.7%) a SNAP was obtainable with either the antidromic or orthodromic technique. In 21 limbs (32.8%), the SNAP was obtained both antidromically and orthodromically. In 33 limbs (51.6%), the SNAP was obtained only antidromically, and in 6 (9.4%), only orthodromically. In four limbs, the response was unobtainable. Mean antidromic onset latency was 2.1 ms ± SD 0.3, peak latency was 2.6 ms ± SD 0.4, amplitude (without averaging) was 4.3 μV ± SD 2.5, and conduction velocity was 60 m/s ± SD 10. Mean orthodromic onset latency was 2.3 ms ± SD 0.3, peak latency was 2.7 ms ± SD 0.3, amplitude was 5.0 μV ± SD 2.2, and conduction velocity was 52 m/s ± SD 5. Utilization of this technique allows for more detailed localization of common peroneal nerve injury based on whether it is proximal or distal to the origin of the LCNC. © 2000 John Wiley & Sons, Inc. Muscle Nerve 23: 1277–1279, 2000.