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Extensor Digitorum Brevis
Region: Leg & Foot Muscles · All leg & foot muscles
Extensor Digitorum Brevis at a glance
| Origin | Top and side of the calcaneus |
|---|---|
| Insertion | Tendons of extensor digitorum longus (toes 2–4) and the proximal phalanx of the great toe |
| Actions | Straightens (extends) the toes |
| Nerve supply | Deep fibular nerve (L5–S1) |
◆ Good to know
The only intrinsic muscle on the top of the foot; a lump appearing here after ankle sprains is usually this muscle swelling, not a ganglion.
More Leg & Foot 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.