Cutaneous branch of the nerve to the mylohyoid muscle: Potential cause of postoperative sensory alteration in the submental area.

Cadaver Humans Neck Muscles
Anatomy Cadaver Head and neck surgery Nerve to mylohyoid muscle Reconstructive surgery Submental island flap

Journal

Annals of anatomy = Anatomischer Anzeiger : official organ of the Anatomische Gesellschaft
ISSN: 1618-0402
Titre abrégé: Ann Anat
Pays: Germany
ID NLM: 100963897

Informations de publication

Date de publication:
Aug 2022
Historique:
received: 22 09 2021
revised: 08 03 2022
accepted: 09 03 2022
pubmed: 22 3 2022
medline: 22 6 2022
entrez: 21 3 2022
Statut: ppublish

Résumé

Previous studies suggest that the nerve to the mylohyoid muscle could have a cutaneous branch. However, its clinical relevance has rarely been discussed because there is insufficient evidence for it. Our aim in this study was to investigate the anatomy of the cutaneous branch of the nerve to the mylohyoid muscle and extend the discussion to surgical management. Twenty sides from ten embalmed cadaveric heads were dissected to identify the cutaneous branch of the nerve to the mylohyoid muscle. The cutaneous branch was traced up to its termination. The cutaneous branch was observed in 90% and classified into types I and II. In type I, the terminal trunk reached the anterior belly of the digastric muscle. In type II there were two types of terminal trunks, superior and inferior branches, which were identified on all sides. The number of the terminal trunk was one in 23.1% (type I; 6/26) and two in 76.9% (type II; 20/26). The terminal points of the cutaneous branch were all located within a 3 cm × 2 cm rectangular segment in the center of the submental area. We propose a new dermatome including the nerve to the mylohyoid muscle in the center. Understanding the cutaneous branch of the nerve could help surgeons to prevent iatrogenic sensory loss of the submental area.

Sections du résumé

BACKGROUND BACKGROUND
Previous studies suggest that the nerve to the mylohyoid muscle could have a cutaneous branch. However, its clinical relevance has rarely been discussed because there is insufficient evidence for it. Our aim in this study was to investigate the anatomy of the cutaneous branch of the nerve to the mylohyoid muscle and extend the discussion to surgical management.
METHODS METHODS
Twenty sides from ten embalmed cadaveric heads were dissected to identify the cutaneous branch of the nerve to the mylohyoid muscle. The cutaneous branch was traced up to its termination.
RESULTS RESULTS
The cutaneous branch was observed in 90% and classified into types I and II. In type I, the terminal trunk reached the anterior belly of the digastric muscle. In type II there were two types of terminal trunks, superior and inferior branches, which were identified on all sides. The number of the terminal trunk was one in 23.1% (type I; 6/26) and two in 76.9% (type II; 20/26). The terminal points of the cutaneous branch were all located within a 3 cm × 2 cm rectangular segment in the center of the submental area.
CONCLUSIONS CONCLUSIONS
We propose a new dermatome including the nerve to the mylohyoid muscle in the center. Understanding the cutaneous branch of the nerve could help surgeons to prevent iatrogenic sensory loss of the submental area.

Identifiants

DOI: 10.1016/j.aanat.2022.151934 PMID: 35307555
pubmed: 35307555
pii: S0940-9602(22)00049-8
doi: 10.1016/j.aanat.2022.151934
pii:
doi:

Types de publication

Journal Article

Langues

eng

Sous-ensembles de citation

IM

Pagination

151934

Informations de copyright

Copyright © 2022 Elsevier GmbH. All rights reserved.

Déclaration de conflit d'intérêts

Declaration of Competing Interest The authors declare that they have no conflicts of interest.

Auteurs

Joe Iwanaga (J)

Department of Neurosurgery, Tulane Center for Clinical Neurosciences, Tulane University School of Medicine, New Orleans, LA, USA; Department of Neurology, Tulane Center for Clinical Neurosciences, Tulane University School of Medicine, New Orleans, LA, USA; Dental and Oral Medical Center, Kurume University School of Medicine, Kurume, Fukuoka, Japan; Division of Gross and Clinical Anatomy, Department of Anatomy, Kurume University School of Medicine, Kurume, Fukuoka, Japan. Electronic address: iwanagajoeca@gmail.com.

Soichiro Ibaragi (S)

Department of Oral and Maxillofacial Surgery, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan.

Tatsuo Okui (T)

Department of Oral and Maxillofacial Surgery, Shimane University Faculty of Medicine, Izumo, Shimane, Japan.

Vasu Divi (V)

Department of Otolaryngology-Head and Neck Surgery, Stanford University School of Medicine, Stanford, CA, USA.

Yoshio Ohyama (Y)

Department of Oral and Maxillofacial Surgery, Shizuoka City Shizuoka Hospital, Shizuoka, Japan; Department of Maxillofacial Surgery, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan.

Koichi Watanabe (K)

Division of Gross and Clinical Anatomy, Department of Anatomy, Kurume University School of Medicine, Kurume, Fukuoka, Japan.

Jingo Kusukawa (J)

Dental and Oral Medical Center, Kurume University School of Medicine, Kurume, Fukuoka, Japan.

R Shane Tubbs (RS)

Department of Neurosurgery, Tulane Center for Clinical Neurosciences, Tulane University School of Medicine, New Orleans, LA, USA; Department of Neurology, Tulane Center for Clinical Neurosciences, Tulane University School of Medicine, New Orleans, LA, USA; Department of Anatomical Sciences, St. George's University, St. George's, Grenada, West Indies; Department of Structural & Cellular Biology, Tulane University School of Medicine, New Orleans, LA, USA; Department of Neurosurgery and Ochsner Neuroscience Institute, Ochsner Health System, New Orleans, LA, USA; Department of Surgery, Tulane University School of Medicine, New Orleans, LA, USA; University of Queensland, Brisbane, Australia.

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Classifications MeSH

questionsmedicales.fr › États, signes et symptômes pathologiques › Processus pathologiques › Mort › Cadavre › Cutaneous branch of the nerve to the mylohyoid...
questionsmedicales.fr › Eucaryotes › Animaux › Chordés › Vertébrés › Mammifères › Eutheria › Primates › Haplorhini › Catarrhini › Hominidae › Humains › Cutaneous branch of the nerve to the mylohyoid...
questionsmedicales.fr › Appareil locomoteur › Muscles du cou › Cutaneous branch of the nerve to the mylohyoid...