Fig. 2
From: The role of ultrasound imaging in vascular compression syndromes
Scheme summarizing the anatomical relationships between the shoulder structures in TOS. a Cost-clavicular space delimited inferiorly by first rib, superiorly by clavicle, and anteriorly by anterior scalene muscle. b Inter-scalene triangle delimited inferiorly by clavicle, medially by anterior scalene muscle, and laterally by middle scalene muscle