The deltopectoral triangle, also called the clavipectoral triangle or infraclavicular fossa, is a small depression below the outer clavicle. It is bounded by the clavicle above, deltoid laterally and pectoralis major medially, and its floor is the clavipectoral fascia.
| Location | Below the lateral part of the clavicle. |
|---|---|
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| Contents |
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A surface landmark and surgical window to the infraclavicular region.
The cephalic vein runs up the deltopectoral groove and dives through this triangle to join the axillary vein, making it a site for venous cut-down and pacemaker lead insertion. The triangle is the starting point of the deltopectoral approach to the shoulder and of infraclavicular plexus blocks.
The vein in the deltopectoral interval can be torn during the deltopectoral approach, causing bleeding and arm swelling.
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