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International Journal of Morphology

On-line version ISSN 0717-9502


RAJANIGANDHA, V et al. The Scalenus Accessorious Muscle. Int. J. Morphol. [online]. 2008, vol.26, n.2, pp.385-388. ISSN 0717-9502.

Many of the anatomical variations that are inadequately described or quantified are actually more clinically and surgically significant than being just anatomical curiosities. We report about such a variation where an aberrant slip existed in the scalene group, in a 56 year old embalmed female cadáver. This kind of variation may affect the size of the scalene triangle, and thus, may potentially result in varied signs and symptoms in patients vulnerable to thoracic outlet syndrome (TOS). Proximity of the scalene muscles to the brachial plexus, subclavian artery and vein, coexisting with aberrant slips or bundles may also predispose to compression syndromes.

Keywords : Scalene muscles; Aberrant slip; Thoracic outlet syndrome; Subclavian artery; Brachial plexus.

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