title: An anatomic variation of the trapezius muscle in a Korean: the cleido-occipitalis cervicalis.
abstract: A variation of the trapezius muscle was observed in a Korean female adult cadaver during routine student dissection. The lateral, upper three-fourths of the descending portion of the trapezius muscle were separated from the remainder of the muscle. This single, isolated bundle fused above the insertion of the midpoint of the clavicle, and attached to the clavicle as a separate tendon. The remaining descending portion inserted into the clavicle and scapula as usual. This abnormal muscle bundle is considered as a variant of the cleido-occipitalis cervicalis, and formation of this variation is discussed based on the embryological development of the relative muscular structures.
authors.affiliation: Division in Anatomy and Histology, Department of Oral Biology, Oral Science Research Center, College of Dentistry, Yonsei University, Seoul, Korea.
authors.forename: Hyun-Ho
authors.initials: HH
authors.lastname: Kwak
authors.forename: Hee-Jin
authors.initials: HJ
authors.lastname: Kim
authors.forename: Kwan-Hyun
authors.initials: KH
authors.lastname: Youn
authors.forename: Hyun-Do
authors.initials: HD
authors.lastname: Park
authors.forename: In-Hyuk
authors.initials: IH
authors.lastname: Chung
mesh_terms: D005260:Female; D006801:Humans; D007723:Korea; D008875:Middle Aged; D018482:Muscle, Skeletal / Q000002:abnormalities* / Q000473:pathology; D012782:Shoulder