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Search Health Information    Deltoid Muscle

Deltoid Muscle

The deltoid muscle is the triangular muscle that covers the upper arm and shoulder joint. It moves the upper arm forward, backward, to the side, and away from the body.

Last Revised: August 29, 2011

Author: Healthwise Staff

Medical Review: William H. Blahd, Jr., MD, FACEP - Emergency Medicine & Patrick J. McMahon, MD - Orthopedic Surgery

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