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open access eISSN 2093-3673

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Original Article

Anat Cell Biol 2021; 54(3): 304-307

Published online September 30, 2021

https://doi.org/10.5115/acb.21.019

Copyright © Korean Association of ANATOMISTS.

Localizing the nerve to the mylohyoid using the mylohyoid triangle

Joe Iwanaga1,2,3,4 , Hee-Jin Kim5 , Grzegorz Wysiadecki6 , Kyoichi Obata8 , Yosuke Harazono7 , Soichiro Ibaragi8 , R. Shane Tubbs1,2,9,10,11

1Department of Neurosurgery, Tulane Center for Clinical Neurosciences, Tulane University School of Medicine, New Orleans, LA, 2Department of Neurology, Tulane Center for Clinical Neurosciences, Tulane University School of Medicine, New Orleans, LA, USA, 3Dental and Oral Medical Center, Kurume University School of Medicine, Kurume, 4Division of Gross and Clinical Anatomy, Department of Anatomy, Kurume University School of Medicine, Kurume, Japan, 5Division in Anatomy and Developmental Biology, Department of Oral Biology, Human Identification Research Institute, BK21 FOUR Project, Yonsei University College of Dentistry, Seoul, Korea, 6Department of Normal and Clinical Anatomy, Chair of Anatomy and Histology, Medical University of Lodz, Lodz, Poland, 7Department of Maxillofacial Surgery, Graduate School of Medical and Dental Science, Tokyo Medical and Dental University, Tokyo, 8Department of Oral and Maxillofacial Surgery, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan, 9Department of Anatomical Sciences, St. George’s University, St. George’s, Grenada, 10Department of Structural & Cellular Biology, Tulane University School of Medicine, New Orleans, LA, 11Department of Neurosurgery and Ochsner Neuroscience Institute, Ochsner Health System, New Orleans, LA, USA

Correspondence to:Joe Iwanaga
Department of Neurosurgery, Tulane Center for Clinical Neurosciences, Tulane University School of Medicine, New Orleans, LA 70112, USA
E-mail: iwanagajoeca@gmail.com

Received: February 5, 2021; Revised: March 18, 2021; Accepted: April 5, 2021

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The nerve to the mylohyoid muscle has been well studied but there are no specific anatomical landmarks for identifying it. Therefore, we aimed to identify anatomical landmarks for localizing the nerve to the mylohyoid muscle in the submandibular region. Sixteen sides from eight embalmed Caucasian cadaveric heads were used in this study. The mean age at the time of death of the specimens was 80.3 years. The anterior and posterior bellies of the digastric muscle, submental artery, and mylohyoid muscle were dissected to verify their relationships with the nerve to the mylohyoid muscle. The nerve to the mylohyoid muscle was found medial to the submental artery, lateral to the anterior belly of the digastric muscle, and anterior to the posterior border of the mylohyoid muscle on all sides. Herein, we identified what we term the mylohyoid triangle. This anatomical region can help localize the nerve to the mylohyoid muscle.

Keywords: Nerve to mylohyoid muscle, Submental island flap, Reconstructive surgery, Head and neck surgery, Submental artery

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