Ulnar Artery
- Ulnar pulse assessment usually done just proximal and slightly radial to the pisiform
- The Allen test can be used to assess the patency of the radial and ulnar arteries.
- A Doppler exam can be used to check the ulnar artery patency.
Diagrams & Photos
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Note the radial artery, ulnar artery, brachial artery, 1 digital arteries, 2 superficial vascular arch, 3 deep vascular arch, 4 lateral collateral arteries, and 5 medial collateral arteries. -
Allen test showing patency of the ulnar artery. Pressure release from ulnar artery and finger tips showing hyperemia. -
Doppler exam of ulnar artery in Guyon's canal.
Key Points
- Hypothenar hammer syndrome is caused by thrombosis of the ulnar artery in Guyon’s canal.
- Aneurysms of the ulnar artery occur in Guyon’s canal.
- The ulnar artery is at risk for injury during carpal tunnel surgery.