Infraspinatus Contents Anatomy pictures Infraspinatus - posterior Infraspinatus - posterolateral Infraspinatus - lateral Referred pain pattern Muscle type Postural Shortens when overactivated Symptoms Pain sleeping on affected shoulder Problems scratching back, problems using hand on the back while medially rotating the shoulder Muscle attachment zones Videos Short version Detailed version MyoFascial lines Levator scapula Rhomboideus Supraspinatus, Infraspinatus, Subscapularis and Teres Minor Triceps brachii Ulnar periosteum Ulnar collateral ligaments Hypothenar muscles Opponens digiti minimi Flexor digiti minimi brevis Abductor digiti minimi Synergists Lateral rotation Posterior Deltoideus Teres Minor Antagonists Medial rotation Anterior Deltoideus Pectoralis Major Latissimus Dorsi Teres Major Subscapularis Anatomy Position Superficial Origin Fossa infraspinata scapula Insertion Tuberculum majus humerus (middle facet) Main function Shoulder Lateral rotation Nerve innervation Segmenta: C5-C6 Peripheral Nervus suprascapularis Arterial supply Suprascapular artery Scapular artery
