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Extensor Digitorum
Region: Forearm & Hand Muscles · All forearm & hand muscles
Extensor Digitorum at a glance
| Origin | Lateral epicondyle of the humerus (common extensor origin) |
|---|---|
| Insertion | Extensor expansions of the four fingers (middle and distal phalanges) |
| Actions | Straightens the fingers at the knuckles (MCP joints); Helps straighten the wrist |
| Nerve supply | Posterior interosseous nerve (C7–C8) |
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.