Main Model
44 Tendon of palmaris longus muscle
Palmaris longus
Proximal Attachment: Medial epicondyle of humerus (common flexor origin)
Distal Attachment: Distal half of flexor retinaculum and apex of palmar aponeurosis
Innervation: Median nerve (C7, C8)
Main Action(s): Flexes hand (at wrist) and tenses palmar aponeurosis
The palmaris longus tendon serves as a guide to the median nerve, which lies deep to it.