PubMed Health⌕ Search

PubMed · 15459926

Shoulder function after accessory nerve-sparing neck dissections.

Abstract

BACKGROUND: This study was designed to observe the effect of preserving the spinal accessory nerve (SAN) during neck dissection (ND) and adjuvant radiotherapy (ART) after ND on shoulder function. METHODS: Fifty-seven patients with head and neck cancer who had undergone primary tumor resection and various types of NDs were enrolled in this prospective study. Postoperative shoulder joint range of motion was evaluated by goniometry, and muscle strength was measured manually. SAN function was evaluated with electromyography (EMG) with respect to percentage of denervation and presence of neurogenic involvement. Patients were grouped by treatment as follows: radical ND (RND) versus modified radical ND (MRND)/selective ND (SND) and ART versus no ART. RESULTS: Shoulder joint range of motion and shoulder muscle strength were significantly better in the MRND/SND group than in the RND group. However, EMG findings were similar in the RND and MRND/SND groups. When all patients who underwent ND, RND, or MRND/SND were compared with the control group, statistically significant changes in shoulder joint range of motion and shoulder muscle strength were found. Also, denervation and neurogenic involvement of the SAN were significantly higher after all NDs than in the control group. ART did not affect range of motion of the shoulder joint, shoulder muscle strength, or the degree of denervation and neurogenic involvement in any of the ND groups. CONCLUSIONS: ART does not have a negative effect on shoulder function after ND. SAN is always functionally impaired even if we preserve it macroscopically during ND.

Explore related subjects

Keep this discovery

Explore connections, maps & timelines

BibTeXRIS

Levent Erisen, Bekir Basel, Jale Irdesel, Mehmet Zarifoglu, Hakan Coskun, Oguz Basut, Ilker Tezel, Ibrahim Hizalan, Selcuk Onart. 2004. Shoulder function after accessory nerve-sparing neck dissections.. https://doi.org/10.1002/hed.20095

Cite the original work for its findings. Save a collection to share your selection of sources.

KEEP EXPLORING

Related citations

[High duplication of an internal jugular vein].

The internal jugular vein is an important landmark in most cervical operations. The surgeon should know the exact position and possible variations to prevent complications. We report on a duplicated internal jugular vein, which is a rare anatomic anomaly and discuss aetiology and appearance of this malformation and the possible affecting of the accessory nerve.

Accessory Nerve↗

Re-examination of the medullary rootlets of the accessory and vagus nerves.

The vagus (X) and cranial root of the accessory nerve (crXI) are traditionally described as arising from a series of rootlets from the medulla oblongata. Descriptions of the number of rootlets vary, and the existence of the crXI is contested. Here we report the results of dissections in six embalmed adult human specimens (11 sides). The rootlets forming the vagus were counted at three positions. At emergence from the brainstem there were between 12 and 21 rootlets, at the jugular foramen the range was 12-17, and midway between these two points it was 6-12. In addition, the origin of the most caudal X rootlet (cX) and the most rostral XI rootlet (rXI) was recorded in relation to the spino-medullary junction, defined as the caudal border of the olivary eminence. The position of the cX varied between -1 and +8 mm (median = +2 mm on left, +3.75 mm on right). The rXI varied between -5 and +7 mm (median = -0.5 mm on left, +1.75 mm on right). In five sides, rXI was above the caudal border of the olivary eminence and as such can be defined as being of cranial origin. These observations show the arrangement of rootlets contributing to the vagus to be more complex than what was described previously and provide evidence for the variable existence of a cranial root of the accessory nerve.

Accessory Nerve↗

Posterior approach technique for accessory-suprascapular nerve transfer: a cadaveric study of the anatomical landmarks and number of myelinated axons.

Accessory-suprascapular nerve transfer by the anterior supraclavicular approach technique was suggested to ensure transferrance of the spinal accessory nerve to healthy recipients. However, a double crush lesion of the suprascapular nerve might not be sufficiently demonstrated. In that case, accessory-suprascapular nerve transfer by the posterior approach would probably solve the problem. The aim of this study was to evaluate the anatomical landmarks and histomorphometry of the spinal accessory and suprascapular nerve in the posterior approach. Dissection of fresh cadaveric shoulder in a prone position identified the spinal accessory and suprascapular nerve by the trapezius muscle splitting technique. After that, nerves were taken for histomorphometric evaluation. The spinal accessory nerve was located approximately halfway between the spinous process and conoid tubercle. The average distance from the conoid tubercle to the suprascapular nerve (medial edge of the suprascapular notch) is 3.3 cm. The mean number of myelinated axons of the spinal accessory and suprascapular nerve was 1,603 and 6,004 axons, respectively. The results of this study supported the brachial plexus reconstructive surgeons, who carry out accessory-suprascapular nerve transfer by using the posterior approach technique. This technique is an alternative for patients who have severe crushed injury of the shoulder or suspected double crush lesion of the suprascapular nerve.

Accessory Nerve↗