Anatomy of Scapula

Scapula serves as the attachment site for 17 muscles Its normal function to stabilize the scapula to the thorax, provide power to the upper limb and synchronize glenohumeral motion. Normal Movements : Elevation and Upward rotation By Trapezius muscle. Scapular Protraction (Anterior and Lateral motion) By Serratus anterior and Pectoralis major and minor muscle Scapular Retraction (Medial motion) By Rhomboid major and minor muscles. Types of Scapular Winging :  Two types based on direction of Inferior border of scapula Medial winging Serratus anterior (long thoracic nerve) Lateral winging Trapezius (CN XI – spinal accesory nerve)