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.
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http://dx.doi.org/10.5115/acb.21.019 | DOI Listing |
Cureus
December 2024
Department of Anatomical Sciences, William Carey University College of Osteopathic Medicine, Hattiesburg, USA.
The digastric muscle is a suprahyoid muscle that is composed of an anterior belly and a posterior belly, which originate from the first and second pharyngeal arches, respectively, and they are innervated by the nerves of these arches. The digastric muscles are involved in the elevation of the hyoid bone and depression of the mandible during mastication, speech, and swallowing. In this report, we present the rare case of bilateral accessory anterior belly of the digastric muscles (ABDMs) that originated from the digastric fossa, medial to the anterior bellies.
View Article and Find Full Text PDFDiagnostics (Basel)
December 2024
Institute of Diagnostic Radiology, Pauls Stradins Clinical University Hospital, LV-1002 Riga, Latvia.
Background/objectives: The muscular base of the oral cavity is formed of the mylohyoid muscle, which forms a sling inferior to the tongue. The muscle is often discontinuous, and defects may include salivary tissues, fat, and/or blood vessels. Hypertrophic sublingual glands located in mylohyoid defects can be herniated into bilateral submandibular spaces and present as palpable masses.
View Article and Find Full Text PDFEur Arch Otorhinolaryngol
December 2024
Institute of Diagnostic and Interventional Neuroradiology, Inselspital, Bern University Hospital and University of Bern, Bern, 3010, Switzerland.
Purpose: To describe a rare case of heterotopic submandibular gland (SMG) tissue herniating through the mylohyoid boutonnière into the anterior submandibular space, diagnosed using imaging, and to provide insights into its clinical implications.
Methods: A 59-year-old male with a history of smoking and type 2 diabetes presented with new-onset hoarseness. Imaging, including contrast-enhanced computed tomography (CT) and magnetic resonance imaging (MRI), was performed.
Radiol Case Rep
January 2025
Department of Pathology Anatomy, Faculty of Medicine, University of Padjadjaran, Dr. Hasan Sadikin General Central Hospital, Bandung, West Java, Indonesia.
Plunging ranula is the extravasation of saliva from the sublingual gland caused by trauma or obstruction of the duct, extending through a defect in the mylohyoid muscle into the submandibular gland. The prevalence of plunging ranula is estimated to be about 2.6 per 100,000 cases with mostly unilateral lesions.
View Article and Find Full Text PDFCureus
September 2024
Department of Oral and Maxillofacial Surgery, Chang Bing Show Chwan Memorial Hospital, Changhua, TWN.
Soft tissue excision and segmental mandibular resection for the treatment of benign or malignant oral tumors result in surgical defects of varying extents. These procedures are often followed by adjuvant chemotherapy and radiotherapy, which induce further adverse events with limited available treatment options. To reduce the morbidity and enhance the success rate of mandibular reconstruction, we developed a novel technique that combines a sagittal mandibular split and the use of a vascularized forearm flap graft.
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