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The posterior scalene, (Latin: scalenus posterior) is the smallest and most deeply seated of the scalene muscles. It arises, by two or three separate tendons, from the posterior tubercles of the transverse processes of the lower two or three cervical vertebrae, and is inserted by a thin tendon into the outer surface of the second rib, behind ...
Scalene may refer to: A scalene triangle, one in which all sides and angles are not the same. A scalene ellipsoid, one in which the lengths of all three semi-principal axes are different; Scalene muscles of the neck; Scalene tubercle, a slight ridge on the first rib prolonged internally into a tubercle
On the right, it lies on the anterior scalene muscle and crosses anterior to the 2nd part of the subclavian artery. On both sides, the phrenic nerve usually runs posterior to the subclavian vein as it enters the thorax where it runs anterior to the root of the lung and between the fibrous pericardium and mediastinal parietal pleura .
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Right: diagram of the course of the brachial plexus in relation to other important anatomic structures in the right side of the neck. The interscalene block is performed by injecting local anesthetic to the nerves of the brachial plexus as it passes through the groove between the anterior and middle scalene muscles , at the level of the cricoid ...
The patient would be unable to pull their shoulder back, as when standing at attention. Isolated dorsal scapular nerve injury is uncommon, but case reports usually involve injury to the scalene muscles. [5] The dorsal scapular nerve is typically not anaesthetised during a supraclavicular nerve block. [6] This can cause pain after some surgeries ...
A scalene trapezoid is a trapezoid with no sides of equal measure, [3] ... A right trapezoid (also called right-angled trapezoid) has two adjacent right angles. [13]
Thoracic outlet syndrome; The right brachial plexus, viewed from in front.: Specialty: Vascular surgery, thoracic surgery: Symptoms: Pain, weakness, loss of muscle at the base of the thumb, swelling, paleness, bluish coloration [1] [2]