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Medial muscular band of the orbicularis oculi muscle

 Park, Jong-Tae  ;  Youn, Kwan-Hyun  ;  Lee, Jae-Gi  ;  Kwak, Hyun-Ho  ;  Hu, Kyung-Seok  ;  Kim, Hee-Jin 
 Journal of Craniofacial Surgery, Vol.23(1) : 195-197, 2012 
Journal Title
 Journal of Craniofacial Surgery 
Issue Date
Despite the importance of anatomic variations in the muscular bands around the orbicularis oculi muscle (OOc), little is known about them. The morphology and variations therein of the medial muscular band of the OOc were thus examined in the current study. Sixty-one hemifaces of Korean cadavers were dissected to enable examination of the anatomic organization of the muscles around the OOc. A medial muscular band of the OOc was observed in 40 cases (65.6%). Three patterns of attachment were found. In type A (14 cases, 23%), it attached to the frontal belly without being attached to the medial canthal tendon; in type B (14 cases, 23%), it originated from the medial canthal tendon at the lower portion of the OOc and inserted into the cheek skin, and in type C (12 cases, 19.7%), it was also observed to insert into the cheek skin and attach to the frontal belly without being attached to the medial canthal tendon. The distance between the inferior edge of the OOc and the subnasale was 16.3 (SD, 4.3) mm and 14.5 (SD, 4.4) mm in cases with and without a medial muscular band, respectively. A space was observed on the inferolateral side of the OOc in about 67.2% of cases. These findings regarding the medial muscular band of the OOc increase further the anatomic variations associated with this region. In addition, it appears that this medial muscular band of the OOc can help to prevent drooping of the OOc.
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Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Anatomy (해부학교실) > 1. Journal Papers
5. Research Institutes (연구소) > Human Identification Research Center (개인식별연구소) > 1. Journal Papers
2. College of Dentistry (치과대학) > Dept. of Oral Biology (구강생물학교실) > 1. Journal Papers
Yonsei Authors
김희진(Kim, Hee Jin) ORCID logo https://orcid.org/0000-0002-1139-6261
박종태(Park, Jong Tae)
이재기(Lee, Jae Gi)
허경석(Hu, Kyung Seok) ORCID logo https://orcid.org/0000-0002-9048-3805
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