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. 2019 May 2;14(1):e14-e15.
doi: 10.1055/s-0039-1685531. eCollection 2019 Jan.

Anomalous Innervation to the Extensor Digitorum Brevis

Marc A Swerdloff  1   2   3 , Danielle F Stewart  1
Affiliations

Anomalous Innervation to the Extensor Digitorum Brevis

Marc A Swerdloff et al. J Brachial Plex Peripher Nerve Inj. .
No abstract available

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Conflict of interest statement

Conflict of Interest None declared.

Figures

Fig. 1
Fig. 1
Compound muscle action potential (CMAP) of the extensor digitorum brevis (EDB) stimulating from various points on the foreleg. Normally the amplitude of the CMAP of the EDB obtained by stimulation of the deep peroneal nerve at the ankle would be equal to that obtained by stimulation at the popliteal fossa, that is, trace A would equal with B. With a deep peroneal to posterior tibial anastomosis, a response is elicited by stimulating the posttibial nerve at the medial ankle (trace D). If there was an accessory deep peroneal nerve contribution, trace C would have a response. Proximal tibial stimulation would elicit a robust response in trace E in an “all tibial foot.”
Fig. 2
Fig. 2
Stimulation sites used to obtain a compound muscle action potential (CMAP) of the extensor digitorum brevis (EDB). ( A ) anterior ankle, ( B ) Lateral popliteal fossa, ( C ) lateral ankle, ( D ) medial ankle, tarsal tunnel, and ( E ) medial popliteal fossa.
Fig. 3
Fig. 3
Illustration of deep peroneal/post tibial anastomosis that must be present to obtain our results. It is shown as red slanted lines.
See this image and copyright information in PMC

References

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