Nerve to mylohyoid branched from the lingual nerve: previously undescribed case

  • Joe IwanagaEmail author
  • Shogo Kikuta
  • Rod J. Oskouian
  • R. Shane Tubbs
Case Report


The lingual nerve is a branch of the mandibular division of the trigeminal nerve. It descends medial and anterior to the inferior alveolar nerve through the pterygomandibular space, runs by the lingual plate and lingual crest at the lower third molar closely, and supplies sensory fibers to the anterior two-thirds of the tongue. Therefore, injury of this nerve is occasionally induced by wisdom tooth extraction and could lead to paralysis of the tongue. The inferior alveolar nerve gives rise to the nerve to mylohyoid just before entering the mandibular foramen, which supplies the mylohyoid and anterior belly of the digastric muscle. We present an extremely rare anatomical variation where the nerve to mylohyoid arose from the lingual nerve near the submandibular duct during routine oral dissection.


Anatomy Cadaver Lingual nerve Mandibular nerve Wisdom tooth 



The authors thank those who donated their bodies for anatomical study and research.

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.


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Copyright information

© Japanese Association of Anatomists 2019

Authors and Affiliations

  • Joe Iwanaga
    • 1
    • 2
    • 3
    Email author
  • Shogo Kikuta
    • 1
    • 3
  • Rod J. Oskouian
    • 1
    • 4
  • R. Shane Tubbs
    • 1
    • 5
  1. 1.Seattle Science FoundationSeattleUSA
  2. 2.Division of Gross and Clinical Anatomy, Department of AnatomyKurume University School of MedicineKurumeJapan
  3. 3.Dental and Oral Medical CenterKurume University School of MedicineKurumeJapan
  4. 4.Swedish Neuroscience InstituteSwedish Medical CenterSeattleUSA
  5. 5.Department of Anatomical SciencesSt. George’s UniversitySt. George’sGrenada

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