Guyon Canal Zones

Guyon Canal Zones. This illustration shows the zones of ulnar nerve compression in the Guyon canal. Zone 1 represents the area proximal to the ulnar nerve bifurcation into sensory and motor branches. Zone 2 encompasses the area of the deep motor branch of the ulnar nerve. Zone 3 represents the area of the superficial sensory branch. Image courtesy S Bhimji MD

From: Anatomy, Shoulder and Upper Limb, Forearm Flexor Carpi Ulnaris Muscle

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