open access

Vol 82, No 3 (2023)
Original article
Submitted: 2022-05-02
Accepted: 2022-06-14
Published online: 2022-07-08
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Duplicated superficial branch of the radial nerve and brachioradialis muscle belly: prevalence and significance

T. Herma1, J. Slezak12, V. Baca3, D. Kachlik13
·
Pubmed: 35818808
·
Folia Morphol 2023;82(3):558-561.
Affiliations
  1. Department of Anatomy, Second Faculty of Medicine, Charles University, Prague, Czech Republic
  2. Department of Anatomy, Third Faculty of Medicine, Charles University, Prague, Czech Republic
  3. Department of Health Care Studies, College of Polytechnics Jihlava, Czech Republic

open access

Vol 82, No 3 (2023)
ORIGINAL ARTICLES
Submitted: 2022-05-02
Accepted: 2022-06-14
Published online: 2022-07-08

Abstract

Background: The superficial branch of the radial nerve (SBRN) is a sensory nerve
innervating the dorsoradial part of the hand. It originates in the cubital fossa, runs
under the belly of the brachioradialis muscle (BM), emerges from underneath in
the distal third of the forearm and continues in the subcutaneous tissue towards
the hand. There exist several anatomical variations of its branching and course,
including a rare variation of its duplication combined with a duplication of the
brachioradialis muscle belly. The aim of this study was to find out the prevalence
of this variation on a sample of cadaveric human bodies which has not been
reported yet.
Materials and methods: We have carefully dissected 208 cadaveric upper limbs
(Central European population). All cases of limbs containing the variation of
a double SBRN and/or a double BM belly were measured and documented.
Results: We have identified 2 cases of a double SBRN combined with a double
BM belly (0.96%). Both were present in the right forearm of a male donor and in
both cases the nerve was impinged by muscle bundles connecting the 2 muscle
bellies together. Moreover, we have encountered 1 case of a double SBRN without
a double BM belly (0.48%), i.e. the total prevalence of a double SBRN was 1.44%.
Conclusions: The duplicated SBRN with the duplicated BM is a relatively rare anatomical
variation that might cause complications while performing various surgical
procedures in the forearm, moreover it might be a rare cause of Wartenberg’s
syndrome.

Abstract

Background: The superficial branch of the radial nerve (SBRN) is a sensory nerve
innervating the dorsoradial part of the hand. It originates in the cubital fossa, runs
under the belly of the brachioradialis muscle (BM), emerges from underneath in
the distal third of the forearm and continues in the subcutaneous tissue towards
the hand. There exist several anatomical variations of its branching and course,
including a rare variation of its duplication combined with a duplication of the
brachioradialis muscle belly. The aim of this study was to find out the prevalence
of this variation on a sample of cadaveric human bodies which has not been
reported yet.
Materials and methods: We have carefully dissected 208 cadaveric upper limbs
(Central European population). All cases of limbs containing the variation of
a double SBRN and/or a double BM belly were measured and documented.
Results: We have identified 2 cases of a double SBRN combined with a double
BM belly (0.96%). Both were present in the right forearm of a male donor and in
both cases the nerve was impinged by muscle bundles connecting the 2 muscle
bellies together. Moreover, we have encountered 1 case of a double SBRN without
a double BM belly (0.48%), i.e. the total prevalence of a double SBRN was 1.44%.
Conclusions: The duplicated SBRN with the duplicated BM is a relatively rare anatomical
variation that might cause complications while performing various surgical
procedures in the forearm, moreover it might be a rare cause of Wartenberg’s
syndrome.

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Keywords

superficial branch, radial nerve, duplication, brachioradialis, variation, double

About this article
Title

Duplicated superficial branch of the radial nerve and brachioradialis muscle belly: prevalence and significance

Journal

Folia Morphologica

Issue

Vol 82, No 3 (2023)

Article type

Original article

Pages

558-561

Published online

2022-07-08

Page views

968

Article views/downloads

616

DOI

10.5603/FM.a2022.0064

Pubmed

35818808

Bibliographic record

Folia Morphol 2023;82(3):558-561.

Keywords

superficial branch
radial nerve
duplication
brachioradialis
variation
double

Authors

T. Herma
J. Slezak
V. Baca
D. Kachlik

References (14)
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