SURGICAL ANATOMY OF THE SMAS - A REINVESTIGATION

Citation
Ak. Gosain et al., SURGICAL ANATOMY OF THE SMAS - A REINVESTIGATION, Plastic and reconstructive surgery, 92(7), 1993, pp. 1254-1263
Citations number
19
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Surgery
ISSN journal
0032-1052
Volume
92
Issue
7
Year of publication
1993
Pages
1254 - 1263
Database
ISI
SICI code
0032-1052(1993)92:7<1254:SAOTS->2.0.ZU;2-3
Abstract
There has been considerable disagreement in descriptions of the SMAS. Fresh cadaver dissection, combining anatomic dissection done with the aid of the operating microscope and histologic cross section of facial tissues, was performed in 24 facial halves. Histologic preparation wa s made on tissue macrosections, each 10 cm in length. Consistent findi ngs include the following: (1) Although the SMAS is closely applied to the superficial surface of the parotid gland, a thin but distinct par otid fascia can be identified between parotid gland and SMAS. (2) The SMAS terminates superiorly within 1 cm below the zygomatic arch, and i s,not continuous with the temporoparietal fascia. (3) The SMAS in the cheek lies in continuity with the orbicularis oculi muscle of the lowe r eyelid. (4) Considerable variability exists in the histologic appear ance of the SMAS in different facial regions within a single cadaver, as well as in a given facial region between cadavers. Because of its v ariability, histologic identification of the SMAS should be made in co ntinuity with known reference structures, such as the platysma.