Blood Supply of the Hand - Anatomy

Arteries of the Hand 📛 👋🏼 Read on for some notes👇🏽

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✅ Palmar arterial supply 
 
Arteries of the hand come from the radial & ulnar arteries. Divided into palmar & dorsal components. 
 
👉🏼 Palmar Superifical part  
*Superficial palmar arch: this is the superficial branch of the ulnar artery which anastomoses with a SUPERFICIAL branch of the radial artery. In front of the flexor tendons and middle of the metacarpal bones. It is superficial to long flexor tendons of the digits and deep to palmar aponeurosis.
 
*Palmar digital artery: branches off the superficial palmar arch and runs on the ulnar side of the little finger. 
 
*Common palmar digital arteries: there are 3 palmar digital arteries which branch off the superficial palmar arch and run in the webs between fingers. They split into two proper palmar digital arteries that supply adjacent fingers. 
 
*Proper palmar digitals: From the common palmar digitals and run along the sides of the fingers, but not the thumb.⁣⁣⁣⁣ 
 
*Superficial palmar branch: Off the radial artery and superficial to the thenar muscles. 
 
👉🏼 Palmar Deep part  
*Radial artery: passes into the wrist and hand along the roof of the anatomical snuffbox and then dorsally around the scaphoid and trapezium bone. Passes between 2 heads of 1st dorsal interosseous muscle and then between 2 heads of adductor pollicis to enter into deep palm & form the deep palmar arch.
 
*Princeps pollicis artery: Starts at the radial artery at the palm & descends past 1st metacarpal to proximal phalanx of the thumb.⁣⁣ 
 
*Radialis indicis artery: from the radial artery & runs along the lateral side of index finger.⁣⁣⁣⁣ 
 
*Deep palmar arch: Continuation of radial artery which anastomoses with the deep branch of ulnar artery. It originates between oblique & transverse heads of the adductor pollicis muscle. 

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