Masseteric nerve

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Masseteric nerve
Gray781.png
Mandibular division of the trigeminal nerve. (Masseteric visible near center.)
Details
From Mandibular nerve
Innervates Masseter muscle, temporomandibular joint
Identifiers
Latin nervus massetericus
TA98 A14.2.01.070
TA2 6253
FMA 53103
Anatomical terms of neuroanatomy

The masseteric nerve is a nerve of the face. It is a branch of the mandibular nerve (CN V3). It passes through the mandibular notch to reach masseter muscle. It provides motor innervation the masseter muscle, and sensory innervation to the temporomandibular joint.

Contents

Structure

Origin

The masseteric nerve is a branch of (the anterior division of) the mandibular nerve (CN V3) (itself a branch of the trigeminal nerve (CN V)). [1] [2]

Course

It passes laterally superior to the lateral pterygoid muscle, anterior to the temporomandibular joint, and posterior to the tendon of the temporalis muscle. It crosses (the posterior portion of) the mandibular notch alongside the masseteric artery before branching out upon the surface of the masseter muscle, then entering the muscle. [2]

Distribution

The masseteric nerve provides motor innervation the masseter muscle. It additionally sends articular (sensory) branches to the temporomandibular joint. [2]

Clinical significance

The masseteric nerve may be harvested and used to repair paralysis of the facial nerve (CN VII). [3] [4]

See also

References

PD-icon.svgThis article incorporates text in the public domain from page 894 of the 20th edition of Gray's Anatomy (1918)

  1. Sinnatamby, Chummy S. (2011). Last's Anatomy (12th ed.). Elsevier Australia. p. 364. ISBN   978-0-7295-3752-0.
  2. 1 2 3 Standring, Susan (2020). Gray's Anatomy: The Anatomical Basis of Clinical Practice (42th ed.). New York. p. 680. ISBN   978-0-7020-7707-4. OCLC   1201341621.{{cite book}}: CS1 maint: location missing publisher (link)
  3. Brenner, Erich; Schoeller, Thomas (1998). "Masseteric nerve: A possible donor for facial nerve anastomosis?" . Clinical Anatomy. 11 (6): 396–400. doi:10.1002/(SICI)1098-2353(1998)11:6<396::AID-CA5>3.0.CO;2-8. ISSN   1098-2353. PMID   9800919. S2CID   10697813.
  4. Spira, M (1978-03-01). "Anastomosis of masseteric nerve to lower division of facial nerve for correction of lower facial paralysis. Preliminary report" . Plastic and Reconstructive Surgery. 61 (3): 330–334. doi:10.1097/00006534-197803000-00004. ISSN   1529-4242. PMID   625495. S2CID   42995889.