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Backward movement toward the midline of the body; moving the scapula back toward the spine during retraction of the shoulder girdle. Typically accompanies Shoulder External Rotation, Transverse Abduction, and Tranverse Extension. 1  Trapezius (middle fibers). 2  Trapezius (lower fibers).
It is important to observe the posture of the. patientâs scapula while at rest and in motion. Winging of the inferior pole indicates dysfunc-. tion of the serratus anterior muscle, but not nec-. essarily a neurological injury. Many painful. shoulder conditions will cause dynamic winging.