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Forward movement away the midline of the body; moving the scapula away from the spine during prostration of the shoulder girdle. Typically accompanies Shoulder Internal Rotation, Transverse Adduction, and Tranverse Flexion. 1  Serratus anterior. 2  Pectoralis minor. 3  Levator scapulae.
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.