Baldry practiced deep dry needling until he had a patient in the early 1980s with a trigger point in his anterior scalene muscle.

And we remove the anterior scalene muscle, the middle scalene muscle and the first rib.

On the right, it lies on the anterior scalene muscle and crosses anterior to the 2nd part of the subclavian artery.

Found in the middle mediastinum, both phrenic nerves run from C3, C4, and C5 along the anterior scalene muscle deep to the carotid sheath.

The Scalenus anterior (scalenus anticus), also known as anterior scalene muscle, lies deeply at the side of the neck, behind the Sternocleidomastoideus.

Each subclavian vein is a continuation of the axillary vein and runs from the outer border of the first rib to the medial border of anterior scalene muscle.

Nunziante Ippolito, a neapolitan physician, indicated the "angle of Nunziante Ippolito" to find vertebral artery, between anterior scalene muscle and Longus colli muscle.

Thoracic outlet obstruction may be caused by a number of abnormalities, including degenerative or bony disorders, trauma to the cervical spine, fibromuscular bands, vascular abnormalities, and spasm of the anterior scalene muscle.

The phrenic nerve is oriented vertically as it passes in front of the anterior scalene, while the subclavian vein is oriented horizontally as it passes in front of the anterior scalene muscle.