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ulnar canal (guyon's canal)

this video will give you quick review of ulnar canal The ulnar (Guyon’s) canal is a fibro-osseous tunnel located at the level of the palm. It transmits the ulnar neurovascular bundle from the forearm into the hand. The ulnar canal is approximately 4cm in length. It extends from the proximal aspect of the pisiform bone to the origin of the hypothenar muscles at the hook of hamate. Its borders consist of: Medial (ulnar) – pisiform, flexor carpi ulnaris tendon, abductor digiti minimi muscle. Lateral (radial) – hook of hamate. Roof – palmar carpal ligament. Floor – flexor retinaculum, pisohamate ligament, and hypothenar muscles. Contents The ulnar canal conveys the ulnar neurovascular bundle into the hand: Ulnar nerve – bifurcates within the canal into superficial (sensory) and deep (motor) branches. Ulnar artery – located on the radial aspect of the ulnar nerve. It gives rise to a deep palmar branch and continues laterally across the palm as the superficial palmar arch. Venae comitantes of ulnar artery Lymphatic vessels