Clinical Study

The Relationship of the Subclavius Muscle with Relevance to Venous Cannulation below the Clavicle

Figure 1

Anatomical relationship of the subclavian vein and the subclavian muscle. (a) Connected group. The subclavian vein (V) is tightly adherent to the subclavius muscle (SM) via the clavipectoral fascia. (b) Partly connected group. The lateral part of the subclavius muscle is not adherent to the subclavian vein (arrow). (c) Unconnected group. The subclavian vein is completely separate from the subclavius muscle (arrowhead), both laterally and medially. The space between the muscle and vein contains loose connective tissue composed of sparse fibers and adipocytes. PMa: pectoralis major (transected), PMi: pectoralis minor (turned over).
(a)
(b)
(c)