The deep palmar arch is formed primarily by the radial artery, running at the metacarpal base level deep to the flexor tendons. It anastomoses with the ulnar artery's deep branch to complete the arch. The princeps pollicis artery for the thumb and the radialis indicis artery for the index finger radial side arise from the radial artery at the first dorsal web space before it forms the deep arch.
| Origin | Radial artery after it passes through the first dorsal interosseous space into the palm |
|---|
The deep palmar arch is less accessible surgically than the superficial arch and its injury is less common due to its protected position deep to the flexor tendons. It provides critical collateral flow when the superficial arch is injured or ligated. The deep arch branches provide additional collateral pathways in upper limb ischaemia from proximal vessel occlusion.
Rare deep palm penetrating injury producing metacarpal-level haemorrhage requiring surgical exploration and repair.
This website uses cookies to enhance your experience. Some are essential for site functionality, while others help us analyze and improve your usage experience. Please review your options and make your choice.
If you are under 16 years old, please ensure that you have received consent from your parent or guardian for any non-essential cookies.
Your privacy is important to us. You can adjust your cookie settings at any time. For more information about how we use data, please read our privacy policy. You may change your preferences at any time by clicking on the settings button below.
Note that if you choose to disable some types of cookies, it may impact your experience of the site and the services we are able to offer.
Some required resources have been blocked, which can affect third-party services and may cause the site to not function properly.
This website uses cookies to enhance your browsing experience and ensure the site functions properly. By continuing to use this site, you acknowledge and accept our use of cookies.
