Modiolus
Identifiers
TA98A04.1.03.035
TA22085
FMA46837
Anatomical terminology

In facial anatomy, the modiolus is a dense, compact, mobile, fibromuscular tissue mass of facial muscles formed by the interlacing of a number of muscles just lateral to the angle of the mouth opposite the second upper premolar tooth.

There are no precise histological boundaries because the modiolus is an irregular zone where dense, compact, interlacing tissue grades into the stems of individually recognizable muscles. It is contributed to by at least nine muscles: orbicularis oris, buccinator, levator anguli oris, depressor anguli oris, zygomaticus major, zygomaticus minor, risorius, quadratus labii superioris, quadratus labii inferioris.[1][2]

Its position and movements are important in moving the mouth, facial expression and in prosthetic dentistry. It is extremely important in relation to stability of lower denture, because of the strength and variability of movement of the area. It derives its motor nerve supply from the facial nerve, and its blood supply from labial branches of the facial artery.[3]

See also

References

  1. ^ Standring, Susan (2021-05-22). Gray's Anatomy E-Book: The Anatomical Basis of Clinical Practice. Elsevier Health Sciences. ISBN 978-0-7020-7707-4.
  2. ^ Sinnatamby, Chummy S. (2011). Last's Anatomy: Regional and Applied. Churchill Livingstone/Elsevier. ISBN 978-0-7020-3394-0.
  3. ^ Drake, Richard L.; Vogl, A. Wayne; Mitchell, Adam W. M. (2019-01-15). Gray's Anatomy for Students E-Book. Elsevier Health Sciences. ISBN 978-0-323-61105-3.

2.Al-Hoqail RA, Abdel Meguid EM. An anatomical and analytical study of the modiolus: enlightening its relevance to plastic surgery. Aesthetic Plast Surg. 2009;33(2):147–152. doi:10.1007/s00266-008-9187-x

3.Pélissier P, Pistre V, Bustamante K, Martin D, Baudet J. Le modiolus. Anatomie comparée, rappels embryologique et physiologique, intérêt chirurgical [The modiolus. Comparative anatomy, embryological and physiological review, surgical importance]. Ann Chir Plast Esthet. 2000;45(1):41–47.

4.Yu SK, Lee MH, Kim HS, Park JT, Kim HJ, Kim HJ. Histomorphologic approach for the modiolus with reference to reconstructive and aesthetic surgery. J Craniofac Surg. 2013;24(4):1414–1417. doi:10.1097/SCS.0b013e318292c939

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