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Ulnar Nerve: Difference between revisions
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Revision as of 08:57, 23 April 2022
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Clinical Relevance
Importantly, the ulnar nerve doesn't provide sensation to the medial forearm. That is innervated by the Medial Antebrachial Cutaneous Nerve. Therefore, an ulnar lesion at the elbow results in anaesthesia of the ulnar hand and fingers, but not the forearm.
Nerve compression in the Guyon canal results in anaesthesia of the ventral palm and fifth finger. Dorsal sensation is supplied by the dorsal sensory branch of the ulnar nerve.