Costoclavicular space
The costoclavicular space is the anterior portion of the superior thoracic aperture, between the clavicle and first rib. The subclavian vessels and brachial plexus pass though the space related to the scalene muscles. Proximally, the plexus passes through the interscalene space, and distally through the subcoracoid space.
The space narrows when the arm abducts which explains its association with thorac outlet syndrome. Its borders are:
- anterior: middle third of the clavicle
- posteromedial: first rib
- posterolateral: upper border of the scapula
Related pathology
