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Extensor Carpi Radialis Longus
Extensor Carpi Radialis Longus is, as the name suggests, the longer of the two extensor carpi radialis muscles as its origin is the ridge above the lateral epicondyle of the humerus, unlike the other wrist extensors which attach to the epicondyle itself.
- Lateral supracondylar ridge of the humerus.
- Base of the 2nd metacarpal (dorsal side).
- Extension of the wrist.
- Radial deviation (abduction) of the wrist.
- Radial nerve.