"origin: lateral supracondylar ridge of humerus, lateral epicondyle of humerus, lateral intermuscular septum of arm"
"insertion: base of 2nd metacarpal on its posterior surface with direct relationship with ECRB, which inserts onto the base of the 3rd metacarpal."
"arterial supply: radial recurrent artery"
"innervation: radial nerve (C6, C7)"
"action: extension and abduction of the wrist joint"
"insertion: base of 2nd metacarpal on its posterior surface with direct relationship with ECRB, which inserts onto the base of the 3rd metacarpal."
"insertion: base of 2nd metacarpal on its posterior surface with direct relationship with ECRB, which inserts onto the base of the 3rd metacarpal."