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Innervation of the trapezius muscle: A study in patients undergoing neck dissections
Author(s) -
Soo K. C.,
Guiloff R. J.,
Oh A.,
Rovere G. Querci Della,
Westbury G.
Publication year - 1990
Publication title -
head and neck
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.012
H-Index - 127
eISSN - 1097-0347
pISSN - 1043-3074
DOI - 10.1002/hed.2880120607
Subject(s) - accessory nerve , trapezius muscle , medicine , cervical plexus , anatomy , cervical nerve , dissection (medical) , neck dissection , motor nerve , brachial plexus , surgery , electromyography , nerve root , pathology , carcinoma , physical medicine and rehabilitation
Twenty‐four patients with surgical section of the accessory nerve and/or its cervical contribution(s) were examined from 1 to 156 months after surgery, and compared to twenty controls. Thirteen patients had a classical neck dissection; seven had the whole length of the accessory nerve preserved but not the cervical plexus contributions. Four had the upper half of the accessory nerve sectioned, but with preservation of both the lower half and its cervical contributions. Clinical and electrophysiological studies of the three portions of the trapezius suggested the existence of an undescribed motor nerve supply to the trapezius and of a motor input from the cervical plexus contributions via the accessory nerve. The former is also supported by an anatomical study.