Jan 30, 2024 · The superficial musculoaponeurotic system, or SMAS, is often described as an organized fibrous network composed of the platysma muscle, parotid fascia, and fibromuscular layer covering the cheek. This system divides the face's deep and superficial adipose tissue and has region-specific morphology.

Superficial muscular aponeurotic system (or superficial musculoaponeurotic system [1]) (SMAS) is a thin yet tough [2]: 438 unitary tissue plane of the face [3] formed by facial fasciae, subcutis connective tissue, and facial muscles.

In 1976, a superficial musculoaponeurotic system (SMAS) was described in the parotid and cheek regions of the face, dividing superficial and deep adipose tissue [1]. Since then, the definitions and descriptions of the SMAS have been the subject of much debate in the literature.

In the layered anatomy of the face, the SMAS is categorized as layer 3, situated between the subcutaneous fat (layer 2) and the areolar plane of the spaces (layer 4). 2 Subsequent anatomical descriptions of the SMAS have varied so much as to result in confusion, thereby hampering proper understanding of its exact anatomy and its place in face ...

Enhance your understanding of the Superficial Musculo-Aponeurotic System, its structure, anatomical relations, and functions, crucial for aesthetic facial surgery.

Mar 4, 2016 · The fibrous component of the outer three layers is the superficial fascia of the face. The SMAS is the deepest of the three layers of the composite unit. In the mid and lower face the composite structure is also present, although less obviously apparent.

Feb 1, 2012 · The SMAS permits complex facial movements and contributes to the symmetry of the face. It provides an anatomic plane for dissection and protection to neurovascular structures. It acts a barrier to infection.

Mitz and Peyronie’s landmark article in 1976 provided un-derstanding of the superficial musculo-aponeurotic system (SMAS) in the parotid and cheek areas; this deeper under-standing of the SMAS has led to face lifts with more desirable aesthetic and longer-lasting outcomes.

Sep 30, 2022 · SMAS is now accepted as an undermining layer of the face in facial rhytidectomy and in various surgeries of the head and neck. Various studies have been conducted on its morphology, including gross anatomical and histologically.

The superficial musculoaponeurotic system (SMAS) is a tissue sheet consisting of collagen and elastin fibers, fat cells, and muscle fibers that extends from the neck to the forehead. It connects the mimetic muscles to the dermis and plays a crucial role in facial expression.