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Tibial Mononeuropathy from a Lower Limb Synovial Cyst

Published online by Cambridge University Press:  18 September 2015

J.C.L. Sun ,
C. Wallace  and
D.W. Zochodne
J.C.L. Sun
Affiliation:
Department of Clinical Neurosciences, The University of Calgary, Calgary
C. Wallace
Affiliation:
Department of Clinical Neurosciences, The University of Calgary, Calgary
D.W. Zochodne*
Affiliation:
Department of Clinical Neurosciences, The University of Calgary, Calgary
*
Department of Clinical Neurosciences, 3330 Hospital Drive N.W., Calgary, Alberta, Canada T2N 4N1
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Abstract

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Background

Tibial mononeuropathy due to compression by a synovial cyst is uncommon with fewer than 10 cases reported in the literature.

Method

Case Study.

Results

Tibial motor mononeuropathy with focal conduction block between the popliteal fossa and ankle was identified by electrophysiological testing. Magnetic resonance imaging and surgical exploration identified a synovial cyst compressing the nerve just distal to the popliteal fossa.

Conclusions

The combination of electrophysiological localization and imaging in cases of unexplained tibial mononeuropathy may identify an unexpected structural cause.

Résumé

Résumé<span class='italic'><span class='bold'>Introduction</span></span>

La mononeuropathie du nerf sciatique poplité interne due à une compression par un kyste synovial est peu fréquente, la littérature faisant état de dix cas seulement.

<span class='italic'><span class='bold'>Méthode</span></span>

Étude de cas.

<span class='italic'><span class='bold'>Résultat</span></span>

Une mononeuropathie du nerf sciatique poplité interne avec bloc de conduction en foyer entre le creux poplité et la cheville a été identifiée par une étude électrophysiologique. Un kyste synovial comprimant le nerf au-dessous du creux poplité a été identifié par imagerie par résonance magnétique et lors de la décompression chirurgicale.

<span class='italic'><span class='bold'>Conclusion</span></span>

La localisation électrophysiologique combinée à l’imagerie dans les cas de mononeuropathie du nerf sciatique poplité interne peut identifier une cause structurale inattendue.

Type
Original Articles
Information
Canadian Journal of Neurological Sciences , Volume 22 , Issue 4 , November 1995 , pp. 312 - 315
Copyright
Copyright © Canadian Neurological Sciences Federation 1995

References

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