Left Deep Palmar Arch (Arcus palmaris profundus sinister)
Educational content only — not medical advice.
Anatomy
The left deep palmar arch is an arterial arcade situated across the bases of the metacarpal bones, lying deep to the flexor tendons and the oblique head of the adductor pollicis. Formed by the terminal portion of the radial artery anastomosing with the deep branch of the ulnar artery, it gives off palmar metacarpal arteries that anastomose with common digital vessels.
Clinical notes
Lacerations in the deep palmar space cause extensive arterial hemorrhage that is challenging to expose and control without endangering adjacent motor branches of the deep ulnar nerve.
Related structures
Educational references
FAQ
What is the role of the Left Deep Palmar Arch?
The left deep palmar arch is an arterial arcade situated across the bases of the metacarpal bones, lying deep to the flexor tendons and the oblique head of the adductor pollicis. Formed by the terminal portion of the radial artery anastomosing with the deep branch of the ulnar artery, it gives off palmar metacarpal arteries that anastomose with common digital vessels.
Why is the Left Deep Palmar Arch clinically important?
Lacerations in the deep palmar space cause extensive arterial hemorrhage that is challenging to expose and control without endangering adjacent motor branches of the deep ulnar nerve.
Source & license
BodyParts3D, © The Database Center for Life Science licensed under CC Attribution 4.0 International (https://creativecommons.org/licenses/by/4.0/). license details