Deep Palmar arch

Formation: It is formed by direct continuation of the radial artery beyond the gap between two head of adductor pollices.

It is completed at the base of the 5^th metacarpal bone by the deep branches of the ulnar artery.

Situation: This arch is connects the radial & ulnar arteries. It is situated deep to the long flexor tendons in the palm.

Relations: The deep palmar arch lies at the level of the proximal border of the extended thumb. The deep branch of the ulnar nerve lies within its concavity.

Branches:

1)      Three palmar metacarpal arteries.

2)      Three perforating branches.

3)      Recurrent branches.