MACROSCOPIC AND MICROSCOPIC ANATOMICAL CHARACTERISTICS OF THE SUPERFICIAL MUSCULOAPONEUROTIC SYSTEM OF THE NOSE AND ITS APPLICATIONS IN AESTHETIC RHINOPLASTY

Xuân Nguyễn Yến, Vân Nguyễn Thanh, Tuấn Hồ Nguyễn Anh, Khoa Trần Đăng, Khải Đỗ Quang

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Abstract

Introduction: The existence of the superficial musculoaponeurotic system (SMAS) in the nasal region remains a subject of debate, with no consensus in the literature. Objective: To determine the prevalence of the nasal SMAS in macroscopic and microscopic images of cadaveric specimens from adult Vietnamese individuals; To assess the thickness of the SMAS at anatomical landmarks in the nasal region. Subjects and Methods: A cross-sectional descriptive study was conducted on 33 nasal bone specimens and eight histological sections of the nasal region obtained from formalin-fixed cadavers of adult Vietnamese individuals preserved under refrigeration. Results:  Macroscopic examination confirmed the presence of the SMAS in 100% of nasal bone specimens, appearing as a distinct anatomical layer continuous with the facial SMAS. Histological analysis also demonstrated the presence of the SMAS in 100% of soft tissue samples. The thickness SMAS was recorded at the Sellion (S), followed by the Rhinion (R). Conclusion: This study confirms the presence of the nasal SMAS as a distinct anatomical structure. The findings provide valuable anatomical data on nasal SMAS, contributing to optimizing surgical techniques in aesthetic rhinoplasty.

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References

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