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Anatomy of the Elbow

The elbow joint is more than a simple hinge. Through a number of muscles and tendons the elbow allows you to bend (flex/extend) your arm and rotate your hand.

The extensor muscle group is on the lateral side (outside) of your forearm and helps turn your wrist palm up. The flexor muscle group is on the medial side (inside) of your forearm and helps turn your wrist palm down. Tendons attach the extensor/flexor muscles to the epicondyles of the elbow. The epicondyles are the two bony knobs on either side (lateral/medial) of your elbow.