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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.

ByHealthwise Staff
Primary Medical ReviewerWilliam H. Blahd, Jr., MD, FACEP - Emergency Medicine
Specialist Medical ReviewerPatrick J. McMahon, MD - Orthopedic Surgery
Last RevisedAugust 29, 2011

WebMD Medical Reference from Healthwise

Last Updated: August 29, 2011
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