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Extensor Carpi Ulnaris
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| Extensor Carpi Ulnaris | |
|---|---|
| Muscle Type | |
| Origin | Lateral epicondyle via the common extensor tendon and the posterior aspect of the ulna |
| Insertion | Medial aspect of the base of the fifth metacarpal bone |
| Action | |
| Synergists | |
| Antagonists | |
| Spinal innervation | C7, C8 |
| Peripheral Innervation | Posterior Interosseous Nerve (branch of Radial Nerve) |
| Vasculature | |
Palpation
The tendon of the extensor carpi ulnaris is palpated on the ulnar side of the dorsal surface of the wrist just distal to the styloid process of the ulna and proximal to the fifth metacarpal
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