Cutaneous Innervation from: "A Clinical Snapshot"

• Top of Shoulder - supraclavicular (C3-4)
• Lateral Brachium - br. of axillary (C5-6) & cutaneous br. of radial (C5-8)
• Medial Brachium - intercostal brachial (T2) & medial cutaneous (C8-T2)
• Medial forearm - ulnar (C8-T1)
• Lateral forearm - cutaneous br. of musculocutaneous (C6-7)
• Hand - median n. (C6-8) for medial side & ulnar n. (C8-T1) lateral side and of course radial n. (C6-8) for dorsum of hand (wrist to PIP only)