<prompt> Retraction of scapula at sternoclavicular joint is done by FMGE Dec 2018Serratus anteriorTrapeziusSubscapularisSupraspinatus  <response>: Retractors of scapula: - 1. Trapezius 2. Rhomboid major 3. Rhomboid minor Protraction of scapula - done by 1. Pectoralis minor 2. Serratus anterior damage causes winging of scapula Subscapularis, supraspinatus along with infraspinatus teres minor muscles connect scapula to humerus provide suppo to glenohumeral joint Rotator - cuff muscles Muscle Origin Inseion Innervation Function Sub- scapularis Medial 23rd of subscapular fossa Lesser tubercle of humerus Upper lower sub- scapular nerves C5, C6, C7. Medial rotation of arm at glenohumeral joint Supraspinatus Medial 23rd of supra spinous fossa of scapula deep fascia that covers muscle Most superior facet on greater tubercle of humerus Supra - scapular nerve C5, C6 Abduction stabilization of glenohumeral joint 