scalene muscles


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sca·lene mus·cles

(skā'lēn mŭs'ĕlz)
A group of three muscles (e.g., anterior, middle, posterior) located in the side of the neck.
References in periodicals archive ?
Magnetic resonance imaging (MRI) revealed a well-defined and lobulated mass in the scalene muscles with a hypointense signal void on T1-weighted images (Figure 2a) and a hyperintense signal void on T2-weighted images (Figure 2b), and it showed extensive enhancement on gadolinium-enhanced T1-weighted images.
Of the five cases, one was located in the middle scalenius muscle, one in the posterior scalenius muscle, one in the anterior scalenius muscle, and the others originated from unspecified scalene muscles (3-6).
Intramuscular hemangiomas that originate from the scalene muscles are rarely seen.
During routine educational dissection for the undergraduates, we came across a variation in the scalene muscle, in a 56 year old embalmed female cadaver.
In 15% of cases, C5 and C6 roots may fuse before piercing the anterior scalene muscle or C5 root alone can pierce the belly of anterior scalene muscle, as seen in 13% of cases.
Examples include entrapment of the lower trunk at the insertion of the anterior scalene muscle on the first rib (scalenus anticus syndrome), entrapment by a crossing cervical rib (cervical rib syndrome), (10) and compression by subclavian artery aneurysm.
The scalene muscles are especially variable, and physiotherapists can clearly benefit from understanding some of the common variations that exist and how they may impact on clinical practice.
Repeatability of surface EMG variables in the sternocleidomastoid and anterior scalene muscles.
As these nerves pass over the first rib between the scalene muscles (and sometimes through the scalene muscles) they form their plexus configuration starting from rami, trunks, divisions, cords, and ending in the main terminal branches: the musculocutaneous, median, ulnar, radial, and axillary nerves.
Third, exercises are recommended to strengthen the shoulder girdle muscles and stretch the scalene muscles.