Ghassemi Alireza, Prescher Andreas, Riediger Dieter, Axer Hubertus
ZMKPG, Universitätsklinikum der RWTH Aachen, Germany.
Aesthetic Plast Surg. 2003 Jul-Aug;27(4):258-64. doi: 10.1007/s00266-003-3065-3.
Despite the relevance of the superficial musculoaponeurotic system (SMAS) in facial rejuvenation a clear anatomic definition of the SMAS is still lacking. Therefore, the morphology of the SMAS in 18 cadavers was investigated using different macroscopic and microscopic techniques. The region-specific anatomy of the SMAS is described in the forehead, parotid, zygomatic, and infraorbital regions, the nasolabial fold, and the lower lip. The SMAS is one continuous, organized fibrous network connecting the facial muscles with the dermis. It consists of a three-dimensional scaffold of collagen fibers, elastic fibers, and fat cells. Two different types of SMAS morphology were demonstrated: type 1 SMAS architecture is located lateral to the nasolabial fold with relatively small fibrous septa enclosing lobules of fat cells, whereas type 2 architecture is located medial to the nasolabial fold, where the SMAS consists of a dense collagen-muscle fiber meshwork. Overall, it was demonstrated that different facial regions show specific morphological characteristics, and thus region-specific surgical interventions may be necessary in facial rejuvenation.
尽管表浅肌肉腱膜系统（SMAS）在面部年轻化中具有重要意义，但目前仍缺乏对SMAS清晰的解剖学定义。因此，我们运用不同的宏观和微观技术，对18具尸体的SMAS形态进行了研究。本文描述了SMAS在前额、腮腺、颧骨、眶下区域、鼻唇沟和下唇等特定区域的解剖结构。SMAS是一个连续且有组织的纤维网络，连接面部肌肉和真皮。它由胶原纤维、弹性纤维和脂肪细胞构成三维支架。研究显示了两种不同类型的SMAS形态：1型SMAS结构位于鼻唇沟外侧，有相对较小的纤维间隔包裹脂肪细胞小叶；而2型结构位于鼻唇沟内侧，此处的SMAS由致密的胶原 - 肌纤维网状结构组成。总体而言，研究表明不同面部区域呈现出特定的形态特征，因此在面部年轻化手术中可能需要针对特定区域进行手术干预。
