Heather J Billings1, William Charles Sherrill. 1. Department of Neurobiology and Anatomy, West Virginia University Health Sciences Center, 1 Medical Center Drive, Morgantown, WV, 26506-9128, USA, hbillings@hsc.wvu.edu.
Abstract
PURPOSE: The cleidocervicalis muscle occurs in approximately 1-3 % of the population that may be confused with pathological neck masses. We describe a novel variant of the muscle and its clinical implications. METHODS: This is a case report of a cleidocervicalis muscle variant identified during routine cadaveric dissection. RESULTS: The muscle identified originated on the C5 vertebra and inserted on the clavicle medial to the trapezius muscle. Innervation was provided by a C6 spinal nerve branch. Notably, a branch of the supraclavicular nerve was closely associated with the muscle, raising the possibility of compression of this nerve. CONCLUSIONS: Presence of a cleidocervicalis muscle should be considered in cases of shoulder pain consistent with supraclavicular nerve entrapment or compression.
PURPOSE: The cleidocervicalis muscle occurs in approximately 1-3 % of the population that may be confused with pathological neck masses. We describe a novel variant of the muscle and its clinical implications. METHODS: This is a case report of a cleidocervicalis muscle variant identified during routine cadaveric dissection. RESULTS: The muscle identified originated on the C5 vertebra and inserted on the clavicle medial to the trapezius muscle. Innervation was provided by a C6 spinal nerve branch. Notably, a branch of the supraclavicular nerve was closely associated with the muscle, raising the possibility of compression of this nerve. CONCLUSIONS: Presence of a cleidocervicalis muscle should be considered in cases of shoulder pain consistent with supraclavicular nerve entrapment or compression.
Authors: Toshiyuki Matsuoka; Per E Ahlberg; Nicoletta Kessaris; Palma Iannarelli; Ulla Dennehy; William D Richardson; Andrew P McMahon; Georgy Koentges Journal: Nature Date: 2005-07-21 Impact factor: 49.962