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The soft triangle revisited.

Pia Ali-Salaam1, Michael Kashgarian, John Persing

  • 1Section of Plastic Surgery, Department of Pathology, Yale University School of Medicine, Yale-New Haven Hospital, 656 Whitney Avenue, New Haven, CT 06511-1312, USA. piaalisalaam@yahoo.com

Plastic and Reconstructive Surgery
|June 28, 2002
PubMed
Summary
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The soft triangle of the nose has three distinct anatomical zones. Incisions in these zones can lead to nasal notching, tip deformity, and external nasal valve dysfunction.

Area of Science:

  • Anatomy
  • Surgical Anatomy
  • Rhinology

Background:

  • The soft triangle of the nose is a critical anatomical region.
  • Understanding its precise structure is essential for preventing surgical complications.

Purpose of the Study:

  • To delineate the distinct anatomical zones within the soft triangle of the nose.
  • To identify the muscular and dermal components of each zone.

Main Methods:

  • Examination of five adult human cadaveric noses.
  • Detailed dissection and histological analysis of the soft triangle region.

Main Results:

  • Identification of three distinct zones within the soft triangle.
  • Zone 1: Dilator naris anterior muscle fibers inserting into the dermis.

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  • Zone 2: Dermal layer.
  • Zone 3: Interdigitating muscle fibers (nasalis and depressor septii) at the nostril rim.

    • Conclusions:

    • Perpendicular incisions in any zone can cause notching and tip deformity.
    • Incisions in Zone 1 may impair external nasal valve function due to disruption of the dilator naris anterior muscle.