When needling ST-12, which structure should practitioners be cautious of?

When needling ST-12 (the acupuncture point located at the intersection of the clavicle and the sternum), it is essential for practitioners to exercise caution regarding the supraclavicular artery and vein. This point is situated in a region where these vascular structures are located, which can pose a risk during acupuncture needle insertion.

The supraclavicular artery and vein are responsible for blood supply and drainage from the upper extremities and are located just above the clavicle. When inserting a needle at ST-12, especially if the needling technique involves deeper penetration, there is potential to inadvertently injure these vessels, leading to complications such as hematoma or excessive bleeding.

Understanding the anatomical landmarks and relationships in this area is crucial for safe practice. While the suprascapular nerve, subclavian vein, and brachial artery are also relevant anatomical structures, the proximity and the risk associated with the supraclavicular artery and vein make them the primary concerns when needling ST-12.