subclavius (muscle)

(redirected from subclavian muscle)

sub·cla·vi·us (mus·cle)

thoracoappendicular muscle; origin, first costal cartilage; insertion, inferior surface of acromial end of clavicle; action, fixes clavicle or elevates first rib; nerve supply, subclavian from brachial plexus.
References in periodicals archive ?
Surgical options include external venolysis, resection of affected segments of vein with saphenous vein patching, and thoracic outlet decompression via first rib resection or scalene or subclavian muscle resection.
It is noted that subclavian vein is compressed between the subclavian muscle and the first rib during the movements of abduction or retraction of the shoulder (Terfold & Mottershead, 1948).
External compression of the vein may be caused by hypertrophy of the subclavian muscle tendon or anterior scalene muscle, cervical ribs, first rib, or callus of the clavicle from an old fracture.