Trapezius muscle innervation from the spinal accessory nerve and branches of the cervical plexus

Pu, Yaoyu; Tang, Enyi; Yang, Xudong

doi:10.1016/j.ijom.2008.02.002

Cited by 64 publications

(54 citation statements)

References 17 publications

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“…This innervation is accomplished mainly by the accessory nerve, but there are some papers reporting partial innervation of this muscle by motor fibres from spinal nerves (Zhao et al, 2006;Yan et al, 2007;Pu et al, 2008). Neuronal tracing studies performed on the rat showed tracer labelled neurons in the ventral horn of the spinal cord.…”

Section: Discussionmentioning

confidence: 99%

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Sources of the motor and somatic sensory innervation of the trapezius muscle in the rat

Sienkiewicz¹,

Dudek²

2010

Vet. Med. - Czech

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ABSTRACT:The study was carried out on nine sexually mature male rats of the Wistar breed weighing approximately 250 g each. Animals were anaesthetized with thiopental sodium injected intraperitoneally (30 mg/kg of body weight). The animals were then injected with Fast Blue tracer into the right trapezius muscle. After a survival period of five weeks the rats were transcardially perfused with buffered paraformaldehyde. The following tissue blocks were collected: spinal cord (cervical and thoracic part) with spinal ganglia and whole brain with medulla oblongata. The tissues collected were cut into 12 μm-thick cryostat sections, which were viewed under a fluorescent microscope equipped with a filter block for FB. FB-positive (FB + ) neurons were counted in every fourth section to avoid double analysis. After injections of the tracer to the right trapezius muscle FB + neurons were found in many nuclei and ganglia. The labelled cells of the medulla oblongata nuclei were found in the bilateral vestibular nuclei including superior (SuVe), lateral (LVe), medial (MVe) and spinal (SpVe) vestibular nuclei and also in the dorsal raphe nucleus (DR) which is a single nucleus, but only in the ipsilateral ambiguous nucleus (Amb). FB + perikarya were also found in the spinal cord, extending between the first cervical segment (C 1 ) and the cranial half of the seventh spinal cervical segment (C 7 ), in an ipsilateral area ventrolateraly with respect to the central canal, within the spinal nucleus of the accessory nerve (SAN). Retrograde labelled sensory neurons were found in the bilateral spinal ganglia (SPG-s), from the second cervical ganglion (C 2 ) to the third thoracic ganglion (Th 3 ).

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Section: Discussionmentioning

confidence: 99%

“…Nerves supplying this muscle reach their destination by different routes: the motor supply via the spinal accessory nerve and also via spinal nerves of the cervical and thoracic part of the spinal cord, and the sensory supply via the cervical plexus (Fitzgerald et al, 1982;Zhao et al, 2006;Pu et al, 2008).…”

mentioning

confidence: 99%

Sources of the motor and somatic sensory innervation of the trapezius muscle in the rat

Sienkiewicz¹,

Dudek²

2010

Vet. Med. - Czech

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“…Therefore, modified RND (MRND) has been introduced in order to minimize postoperative morbidities [2]. However, even when the SAN has been preserved, a deficit in shoulder function can occur [3], and approximately 30% of all patients show postoperative shoulder impairment after MRND [4]. On the other hand, the degree of shoulder dysfunction after RND can also be minimal [5].…”

Section: Introductionmentioning

confidence: 99%

Motor Innervation of the Trapezius Muscle: Intraoperative Motor Conduction Study during Neck Dissection

Kim¹,

Choi²,

Lee³

et al. 2014

ORL

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Objectives: To evaluate the motor input from the spinal accessory nerve (SAN) and the branches of the cervical plexus in an intraoperative motor nerve conduction study measuring motor action potentials by direct stimulation of the exposed nerve during neck dissection. Methods: The entire length of the SAN and the contributions from the upper cervical plexus were preserved. Compound muscle action potentials were measured for each part of the trapezius muscle on stimulation of the SAN, C2, C3, and C4 nerves. Results: With stimulation of the spinal nerve, evoked responses were obtained from all 24 patients in the descending, transverse, and ascending trapezius muscle. C2 contributions were noted in 2 out of 24 patients; however, no patient revealed responses in all three parts of the muscle. C3 contributions were seen in 11 out of 24 patients, supplying all three parts of the muscle in 8 patients, and C4 contributions were noted in 20 out of 24 patients, supplying all three parts of the muscle in 16 of them. Conclusions: The SAN provided the most consistent motor input to the trapezius muscle. The C2, C3, and C4 nerves also provided motor input to the trapezius muscle; however, they were either inconsistently present or, when present, irregularly innervated the three parts of the trapezius muscle.

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“…From the punctum nervosum, the accessory nerve courses inferolaterally, then ramifies into numerous branches supplying the trapezius (Aramrattana et al, 2005;Clemente, 1985;Dailiana et al, 2001;Kierner et al, 2000;Roman 1981;Shiozaki et al, 2000) (Fig.9). In addition to the accessory nerve, motor branches of the cervical plexus derived from the C2-C3 anterior rami participate in innervation of the sternocleidomastoid and trapezius muscles (Aramrattana et al, 2005;Bertrand, 2004;Clemente, 1985;Dailiana et al, 2001;Pu et al, 2008;Roman 1981;Stacey et al, 1995;Zhao et al, 2006). Among the entire phalanx of nerves to both the muscles, multiple variations can be encountered during surgical exploration (Brennan et al, 2002;Brown et al, 1988;Caliot et al, 1984Caliot et al, , 1989Latarjet, 1948;Stacey et al, 1995;Taira, 2009) (Fig.10 and Fig.11).…”

Section: Surgical Anatomy Of the Accessory Nerve And Its Peripheral Bmentioning

confidence: 99%

“…The nerves which contribute to the innervation of cervical dystonic muscles are summarized in Table 3 ( Anderson et al, 2008;Aramrattana et al, 2005;Bertrand, 2004;Clemente, 1985;Dailiana et al, 2001;Frank et al, 1997;Kierner et al, 2000;Pu et al, 2008;Roman, 1981;Stacey et al, 1995;Taira, 2009;Zhao et al, 2006 Table 3. The muscles in the neck region associated with cervical dystonia and their nerve supply…”

Section: Conclusion Of the Nerve Supplymentioning

confidence: 99%

Dystonia and Peripheral Nerve Surgery in the Cervical Area

Sitthinamsuwan¹,

Nunta-aree²

2012

Dystonia - The Many Facets

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Trapezius muscle innervation from the spinal accessory nerve and branches of the cervical plexus

Cited by 64 publications

References 17 publications

Sources of the motor and somatic sensory innervation of the trapezius muscle in the rat

Sources of the motor and somatic sensory innervation of the trapezius muscle in the rat

Motor Innervation of the Trapezius Muscle: Intraoperative Motor Conduction Study during Neck Dissection

Dystonia and Peripheral Nerve Surgery in the Cervical Area

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