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Palmaris Longus
Region: Forearm & Hand Muscles · All forearm & hand muscles
Palmaris Longus at a glance
| Origin | Medial epicondyle of the humerus (common flexor origin) |
|---|---|
| Insertion | Palmar aponeurosis and flexor retinaculum |
| Actions | Bends the wrist weakly; Tenses the palm's fascia |
| Nerve supply | Median nerve (C7–C8) |
◆ Good to know
Absent on one or both sides in roughly 15% of people; its tendon is a favourite graft source precisely because it can be spared. Making the thumb and little finger meet with the wrist flexed reveals whether you have it.
More Forearm & Hand Muscles
Please note: This page is an anatomy education summary for students and curious readers, not medical advice. Attachment points are given in their classic short form; individual anatomy varies, and detailed dissection-level descriptions belong in an anatomy atlas.