origin: posterior surface of lateral epicondyle of humerus;
insertion: lateral side of olecranon process and posterior surface of proximal portion of ulna;
action: extension and pronation of the forearm at the elbow;
nerve supply: radial,
C5,
C6;
synergist:
triceps brachii;
The aconeus muscle flap: its anatomy and clinical application.
CC Schmidt MD. et al.
J. Hand Surg. Vol 24-A. 1999. p 359