Which structure passes through Guyon’s canal?
Correct Answer: Ulnar nerve
Description: Ans. A Ulnar nerveRef: Gray's Anatomy review E-book, P 336Clinical Correlates: Guyon's Canal Syndrome* Guyon's canal (ulnar tunnel) is formed by the pisiform, hook of the hamate, and pisohamate ligament, deep to the palmaris brevis and palmar carpal ligament and transmits the ulnar nerve and artery.* Guyon's canal syndrome is an entrapment of the ulnar nerve in the Guyon's canal.* Symptoms: Pain, numbness, and tingling in the ring and little fingers, followed by loss of sensation and motor weakness.* Rx: Surgical decompression of the nerve.
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Anatomy
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