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This document was created by Alex Yartsev ([email protected]); if I have used your data or images and forgot to reference you, please email me. Cutaneous innervation of the upper limb The patterns of cutaneous sensory nerve distribution o The clavicle is an S-shaped long bone, which forms part of the pectoral girdle o It articulates proximally with the sternum and distally with the acromion of scapula o Bony features include: Acromial facet CUTANEOUS NERVES Supraclavicular nerve Superior lateral cutaneous nerve of the arm Intercostobrachial nerve Cutaneous branches of the Radial nerve -inferior lateral cutaneous nerve of forearm -posterior cutaneous nerve of forearm Lateral cutaneous nerve of forearm, Which in the arm is called the Medial cutaneous nerve of the arm Medial cutaneous nerve of the forearm Medial cutaneous nerve of the forearm Palmar cutaneous branch of the RADIAL NERVE Palmar cutaneous branch of the MEDIAN NERVE Palmar cutaneous branch of the ULNAR NERVE Sensory innervation of the ring finger PALMAR SIDE: two halves: Palmar cutaneous branch of o radial half supplied by the MEDIAN NERVE (palmar cutaneous branch) the RADIAL NERVE o ULNAR half supplied by the ULNAR NERVE (palmar cutaneous branch) DORSAL SIDE: Three parts: o Whole ULNAR side: supplied by the ULNAR nerve (palmar cutaneous branch) o Proximal RADIAL half : supplied by the RADIAL nerve (palmar cutaneius branch, from the superficial branch) o Distal radial side: MEDIAN NERVE (palmar cutaneous branch) Palmar cutaneous branch of the MEDIAN NERVE Palmar cutaneous branch of the ULNAR NERVE References: Moore’s Clinically Oriented Anatomy 5th edition