Electromyographic study of the subclavius muscle

1979 ◽  
Vol 105 (3) ◽  
pp. 284-290 ◽  
Author(s):  
Francisco Prado Reis ◽  
Armando M. de Camargo ◽  
Mathias Vitt ◽  
Claudio A.F. de Carvalho
Keyword(s):  
Subclavius Muscle

Venous ring around the subclavius muscle: A rare variation

2008 ◽  
Vol 21 (8) ◽  
pp. 781-782 ◽  
Author(s):  
Diana Putz ◽  
Gabriel Djedovic
Keyword(s):  
Rare Variation ◽  
Subclavius Muscle

Function of the Subclavius Muscle in a Nonhuman Primate, the Spider Monkey (Ateles)

1982 ◽  
Vol 38 (3-4) ◽  
pp. 170-182 ◽  
Author(s):  
William Konstant ◽  
Jack T. Stern, Jr. ◽  
John G. Fleagle ◽  
William L. Jungers
Keyword(s):  
Nonhuman Primate ◽  
Spider Monkey ◽  
Subclavius Muscle

Thoracic Outlet Syndrome Secondary to an Anomalous Subclavius Muscle

Orthopedics ◽  
2001 ◽  
Vol 24 (8) ◽  
pp. 793-794
Author(s):  
Samer S Hasan ◽  
Anthony A Romeo
Keyword(s):  
Thoracic Outlet Syndrome ◽  
Subclavius Muscle

Bilateral variation of subclavius muscle resembling subclavius posticus

2008 ◽  
Vol 30 (2) ◽  
pp. 171-174 ◽  
Author(s):  
Ryan M. Martin ◽  
Neil M. Vyas ◽  
Jayc C. Sedlmayr ◽  
Jonathan J. Wisco
Keyword(s):  
Subclavius Posticus ◽  
Subclavius Muscle

scholarly journals Subclavius muscle

2013 ◽  
Author(s):  
Daniel Bell ◽  
Henry Knipe
Keyword(s):  
Subclavius Muscle

scholarly journals Improved functional outcome in NTOS patients following resection of the subclavius muscle with radiological signs of nerve impingement: indication of participation of the subclavius in brachial plexus compression

2019 ◽  
Vol 131 (5) ◽  
pp. 1541-1551
Author(s):  
Yanxi Liu ◽  
Zhan Zhang ◽  
Jiangbo Wang ◽  
Guangzhi Wu ◽  
Wei Yu ◽  
...  
Keyword(s):  
Brachial Plexus ◽  
Functional Recovery ◽  
Surgical Outcomes ◽  
Multivariate Analyses ◽  
Symptom Duration ◽  
Postoperative Mri ◽  
Shoulder Range Of Motion ◽  
Self Assessments ◽  
The Impact ◽  
Subclavius Muscle

OBJECTIVEBoth clinical and radiological reports have suggested that the subclavius, a muscle in the costoclavicular space of the thoracic outlet, participates in neurogenic thoracic outlet syndrome (NTOS) in some instances, especially during movements narrowing the costoclavicular space. Magnetic resonance imaging can identify subclavius muscles with signs of nerve impingement, yet the impact of the subclavius in such situations remains unclear. Therefore, the authors investigated whether dividing or sparing the subclavius characterized by nerve impingement on MRI would affect surgical outcomes.METHODSIn this retrospective nonrandomized study, authors analyzed all NTOS patients with a subclavius muscle characterized by nerve impingement on MRI (loss of normal fat planes surrounding the brachial plexus) in the period between March 2010 and November 2016. Patients were divided into two groups: the sparing group, in which patients had undergone conventional supraclavicular scalenectomy and first rib resection (FRR), and the dividing group, in which patients had undergone scalenectomy, FRR, and subclavius dividing using a modified supraclavicular incision. The Disabilities of the Arm, Shoulder and Hand (DASH) questionnaire, a shoulder range of motion subscale (DASH items 6, 12–15, and 19) concerning overhead activities that can significantly narrow the costoclavicular space, postoperative MRI studies, and patient self-assessments were used to assess surgical outcomes. Univariate and multivariate analyses were conducted to identify independent factors associated with subscale scores.RESULTSFrom a total of 261 patients screened, 71 were eligible for study inclusion. Compared with the sparing group (33 patients), the dividing group (38 patients) had similar postoperative DASH scores and self-assessments but better subscale scores (9.50 ± 2.76 vs 11.94 ± 2.87, p = 0.0005). Postoperative MRI on hyperabduction showed that the brachial plexus became surrounded by normal fat tissue in the costoclavicular space in the diving group but still had signs of impingement from the untreated subclavius muscle in the sparing group. This observation agreed with a better functional recovery in terms of overhead activities in the dividing group, which was reflected by better subscale scores. Multivariate analyses indicated that the type of treatment and symptom duration prior to surgery influenced the subscale scores independently.CONCLUSIONSThis study revealed that an untreated radiological nerve-compressing subclavius muscle could lead to a relatively lower degree of recovery in the ability to perform overhead activities for NTOS patients postoperatively, suggesting that such subclavius muscles may participate in positional brachial plexus compression during movements narrowing the costoclavicular space. Dividing the muscles could decompress the costoclavicular space more effectively and may lead to better functional recovery.

scholarly journals The Anatomy and Variation of the Subclavius Muscle, its Coracoid Attachment, and Relation to the Clavi-coraco-axillary Aponeurosis

2019 ◽  
Vol 3 (4) ◽  
pp. 251-252
Author(s):  
Ulrich Crepaz-Eger ◽  
Simon Lambert ◽  
Romed Hoermann ◽  
Clemens Hengg ◽  
Dominik Knierzinger ◽  
...  
Keyword(s):  
Subclavius Muscle
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