Anatomy

Middle Trapezius: Functional Anatomy Guide

The middle trapezius (G. trapeza, four-sided or four-legged table.) refers to the middle section of fibers in the trapezius, between the upper and lower trapezius fibers. It acts on the scapula and is the prime mover in scapular retraction. The middle trapezius is grouped as a superficial posterior axioappendicular (extrinsic shoulder) muscle. It’s situated between …

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