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Journal of Medical Case Reports

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Open Access 01-12-2021 | Case report

Anomalous plantar intrinsic foot muscle attaching to the medial longitudinal arch: possible mechanism for medial nerve entrapment: a case report

Authors: R. Claire Aland, Alana C. Sharp

Published in: Journal of Medical Case Reports | Issue 1/2021

Abstract

Background

Muscular variations are potentially symptomatic and may complicate imaging interpretation. Intrinsic foot musculature and extrinsic tendon insertion variations are common. Distinct supernumerary muscles are rare. We report a novel anomalous intrinsic foot muscle on the medial longitudinal arch.

Case presentation

An accessory muscle was encountered on the medial arch of the right foot of a 78-year-old white male cadaver, between layers two and three of the foot intrinsics. It did not appear to be a slip or variant of a known foot muscle. This muscle consisted of two slips that ran transversely on the plantar aspect of the medial arch, crossing the medial transverse tarsal joint and attaching to the tuberosity of the navicular, the short and long plantar ligaments, and spring ligament.

Conclusions

The medial plantar vessels and nerve passed from deep to superficial between the two slips, and this suggests a possible location for medial nerve entrapment.

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Title: Anomalous plantar intrinsic foot muscle attaching to the medial longitudinal arch: possible mechanism for medial nerve entrapment: a case report
Authors: R. Claire Aland
Alana C. Sharp
Publication date: 01-12-2021
Publisher: BioMed Central
Published in: Journal of Medical Case Reports / Issue 1/2021
Electronic ISSN: 1752-1947
DOI: https://doi.org/10.1186/s13256-021-02676-x

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Springer Medicine

Anomalous plantar intrinsic foot muscle attaching to the medial longitudinal arch: possible mechanism for medial nerve entrapment: a case report

Abstract

Background

Case presentation

Conclusions

Keynote webinar | Spotlight on sleep in brain health

Springer Medicine

Abstract

Background

Case presentation

Conclusions

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