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Nose muscular dynamics: the tip trigonum.

E E Figallo¹, J A Acosta

¹Clinica el Avila, Caracas, Venezuela. efigallo@clinicaelavila.com

Plastic and Reconstructive Surgery

|October 18, 2001

Summary

This study clarifies the complex anatomy and dual functions of nasal muscles, updating terminology and descriptions for better understanding of nose expression dynamics.

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Area of Science:

Anatomy
Physiognomy
Muscular Dynamics

Background:

Nasal muscle terminology and function have been inconsistently described over two centuries.
Previous works introduced confusion by altering terms and omitting nasal muscles.
Gray's Anatomy (1858) first described nasal tip muscles, but later research lacked clarity.

Purpose of the Study:

To provide an updated, precise description of nasal muscles, including their terms, locations, insertions, and functions.
To clarify the concept of "dual function" in nasal mimetic muscles lacking well-defined fascia.
To establish a clear anatomical basis for nose expressions by re-examining muscular dynamics.

Main Methods:

Review of historical anatomical texts, focusing on Gray's Anatomy (1858).
Analysis of nasal muscle structure, emphasizing dual portions and their separate contractions.
Integration of physiognomy research to understand the expressive functions of nasal muscles.

Main Results:

Detailed descriptions of individual nasal muscles, their dual portions, and specific functions are provided.
The musculus myrtiformis is identified as having a dual function, with distinct portions serving the septum and nostril.
The trigonum musculare apicis nasi is defined as the interaction of specific muscles, creating nasal tip movements.

Conclusions:

This study establishes clear terminology and functional descriptions for nasal muscles.
The concept of "dual function" is critical for understanding nasal mimetic muscles.
Accurate anatomical knowledge of nasal muscles is essential for interpreting facial expressions.

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