The palmaris longus is a muscle within the superficial compartment of the anterior forearm. It is absent in approximately 15% of the population.
- Attachments: Originates from the medial epicondyle, attaches to the flexor retinaculum of the wrist.
- Actions: Flexion (weak) at the wrist.
- Innervation: Median nerve.
- Blood supply: Ulnar artery.