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Extensor Carpi Radialis Brevis (ECRB)
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Extensor Carpi Radialis Brevis (ECRB):
Proximal Attachment - Lateral epicondyle of humerus
Distal Attachment - Dorsal aspect of base of 3rd metacarpal
Innervation - Deep branch of radial nerve
Action - Extend and abduct hand at the wrist joint