LKnative - Superficial cervical plexus block

3 – Periclavicular cutaneous and muscular innervation

Supraclavicular nerve (from C3-C4 nerve roots) innervates the skin above and below the clavicle via the cervical plexus

Long thoracic nerve (from C5-C7 nerve roots) innervates the serratus anterior muscle via the brachial plexus

Subclavian nerve (from the superior trunk of the brachial plexus) innervates the subclavian muscle

Suprascapular nerve (from the superior trunk of the brachial plexus) innervates the supra- and infraspinatus muscles

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Spinal nerve roots C2-C7 (#1-6), supraclavicular nerve (magenta arrow), suprascapular nerve (blue arrows), long thoracic nerve (green arrows), subclavian nerve (cyan arrows), subclavian muscle (red asterix), supra- and infraspinatus muscles (yellow asterix), and serratus anterior muscle (magneta asterix)