| Ulnar canal | |
|---|---|
 Transverse section across the wrist and digits. | |
 Superficial palmar nerves. | |
| Details | |
| Identifiers | |
| Latin | canalis ulnaris |
| TA98 | A03.5.11.202 |
| TA2 | 2552 |
| FMA | 42358 |
| Anatomical terminology | |
The ulnar canal or ulnar tunnel (also known as Guyon's canal or tunnel) is a semi-rigid longitudinal canal in the wrist that allows passage of the ulnar artery and ulnar nerve into the hand.[1] (These are named after the ulna, the long bone on the little finger side of the arm.) The roof of the canal is made up of the superficial palmar carpal ligament, while the deeper flexor retinaculum and hypothenar muscles comprise the floor. The space is medially bounded by the pisiform and pisohamate ligament more proximally, and laterally bounded by the hook of the hamate more distally.[2][3] It is approximately 4 cm long, beginning proximally at the transverse carpal ligament and ending at the aponeurotic arch of the hypothenar muscles.[4]
- ^ Stanley Hoppenfeld; Michael S. Zeide (1994). Orthopaedic Dictionary. Lippincott Williams & Wilkins. ISBN 978-0-397-51311-6.
- ^ Hatch, Daniel (Aug 20, 2014). "Ulnar Tunnel Syndrome". Orthobullets.
- ^ James R. Doyle (2003). Surgical Anatomy of the Hand and Upper Extremity. Lippincott Williams & Wilkins. pp. 682–. ISBN 978-0-397-51725-1.
- ^ Wheeless, III, Clifford R. (Dec 21, 2012). "Tunnel of Guyon". Wheeless' Textbook of Orthopaedics. Duke Orthopaedics.