Hur Mi-Sun, Youn Kwan-Hyun, Hu Kyung-Seok, Song Wu-Chul, Koh Ki-Seok, Fontaine Christian, Kim Hee-Jin
Division in Anatomy and Developmental Biology, Department of Oral Biology, Oral Science Research Center, Human Identification Research Center, Brain Korea 21 Project, Yonsei University College of Dentistry, Seoul, South Korea.
J Craniofac Surg. 2010 Jan;21(1):258-60. doi: 10.1097/SCS.0b013e3181c5a3be.
The levator labii superioris (LLS) muscle is well known as one of the upper-lip elevators; however, there have been few reports about the anatomic description of the LLS. Especially, the shape of the LLS and its relationship with the nasal ala were not clearly shown in the literature. The aim of this study was to clarify and describe the morphology and topography of the LLS and the anatomic variations to understand the function of the LLS related with the nasal ala. The LLS was examined in 102 specimens of embalmed Korean and French adult cadavers. The LLS was classified into 3 categories according to its shape and attachment: rectangular (83%), fan (10%), or trapezoid (7%) type. The medial fibers of the LLS were attached to the deep surface of the alar facial crease and were mainly intermingled with the alar part of the nasalis. Some of the deeper muscle fibers of the LLS extended to the vestibular skin of the nasal lobule. These new anatomic findings in the current study could be useful information for understanding the function of the LLS and the various surgical procedures of the perinasal region.
提上唇肌（LLS）是众所周知的上唇提升肌之一；然而，关于提上唇肌的解剖学描述的报道很少。特别是，提上唇肌的形状及其与鼻翼的关系在文献中并未明确显示。本研究的目的是阐明和描述提上唇肌的形态和局部解剖以及解剖变异，以了解提上唇肌与鼻翼相关的功能。在102例经防腐处理的韩国和法国成年尸体标本中对提上唇肌进行了检查。根据其形状和附着情况，提上唇肌分为3类：矩形（83%）、扇形（10%）或梯形（7%）型。提上唇肌的内侧纤维附着于鼻翼面部皱襞的深面，主要与鼻肌的鼻翼部分交织。提上唇肌的一些较深肌纤维延伸至鼻小叶的前庭皮肤。本研究中的这些新的解剖学发现可能是理解提上唇肌功能和鼻周区域各种外科手术的有用信息。
