OBJECTIVES: Despite increasing use of selective, nerve-sparing surgical techniques during neck dissections, the reported rate of postoperative paralysis of the trapezius muscle is still high. The aim of the study is to measure and compare motor inflow to the trapezius muscle, in order to better understand the peripheral neuroanatomy. METHODS: Intraoperative nerve monitoring (electroneurography) in patients undergoing routine neck dissection (n=18). The innervation of the 3 functional parts of the trapezius muscle was mapped and quantified through compound muscle action potentials. RESULTS: In 18/18 (100%) of the patients, the spinal accessory nerve (SAN) innervated all parts of the trapezius muscle. In 7/18 (39%) of the patients, an active motor branch from the cervical plexus was detected, equally distributed to all functional parts of the trapezius muscle, at levels comparable to the SAN. CONCLUSIONS: Compared to the SAN, branches from cervical plexus provide a significant amount of neural input to all parts of the trapezius muscle. Intraoperative nerve monitoring can be used in routine neck dissections to detect these branches, which may be important following surgical injury to the SAN.
OBJECTIVES: Despite increasing use of selective, nerve-sparing surgical techniques during neck dissections, the reported rate of postoperative paralysis of the trapezius muscle is still high. The aim of the study is to measure and compare motor inflow to the trapezius muscle, in order to better understand the peripheral neuroanatomy. METHODS: Intraoperative nerve monitoring (electroneurography) in patients undergoing routine neck dissection (n=18). The innervation of the 3 functional parts of the trapezius muscle was mapped and quantified through compound muscle action potentials. RESULTS: In 18/18 (100%) of the patients, the spinal accessory nerve (SAN) innervated all parts of the trapezius muscle. In 7/18 (39%) of the patients, an active motor branch from the cervical plexus was detected, equally distributed to all functional parts of the trapezius muscle, at levels comparable to the SAN. CONCLUSIONS: Compared to the SAN, branches from cervical plexus provide a significant amount of neural input to all parts of the trapezius muscle. Intraoperative nerve monitoring can be used in routine neck dissections to detect these branches, which may be important following surgical injury to the SAN.
Authors: Sanne Lotte Journée; Henricus Louis Journée; Hanneke Irene Berends; Steven Michael Reed; Wilhelmina Bergmann; Cornelis Marinus de Bruijn; Cathérine John Ghislaine Delesalle Journal: Front Neurosci Date: 2022-04-27 Impact factor: 5.152
Authors: Panagiotis Asimakopoulos; Ashok R Shaha; Iain J Nixon; Jatin P Shah; Gregory W Randolph; Peter Angelos; Mark E Zafereo; Luiz P Kowalski; Dana M Hartl; Kerry D Olsen; Juan P Rodrigo; Vincent Vander Poorten; Antti A Mäkitie; Alvaro Sanabria; Carlos Suárez; Miquel Quer; Francisco J Civantos; K Thomas Robbins; Orlando Guntinas-Lichius; Marc Hamoir; Alessandra Rinaldo; Alfio Ferlito Journal: Curr Oncol Rep Date: 2020-11-14 Impact factor: 5.075
Authors: V Popovski; A Benedetti; D Popovic-Monevska; A Grcev; A Stamatoski; J Zhivadinovik Journal: Acta Otorhinolaryngol Ital Date: 2017-10 Impact factor: 2.124