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Health Topics/Joint Health/Healthy Bones, Joints & Muscles/Parts of the Musculoskeletal System/Parts of the Muscular System

What is the posterior deltoid muscle?

Dr. Mike Clark, DPT
Dr. Mike Clark, DPT
Fitness
Located on the rear part of the shoulder, the posterior deltoid muscle runs from the insertion of the trapezius to the top of the upper arm (humerus). It helps externally rotate the upper arm (humerus) and pull the arm back.

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