The infraclavicular block anaesthetizes the brachial plexus inside the axilla
The brachial plexus in the infraclavicular region consists of three cords (syn: fascicles): the lateral, the posterior, and the medial cord
They run in close relationship to the axillary artery
That is exploited for the purpose of the infraclavicular brachial plexus block
The picture shows the axilla after removal of the anterior wall of the axilla (the major and minor pectoral muscles) The three cords of the brachial plexus are named according to their relationship to the middle part of the axillary artery
