Muscles of the Shoulder (Division, Origin, Insertion, Function)

Content Introduction 0:00 Division of the Shoulder Muscles 0:28 Deltoid 1:07 Subscapularis 2:18 Supraspinatus 2:41 Infraspinatus 3:03 Teres Minor 3:16 Teres Major 3:32 Rotator Cuff Muscles 3:57 ---------------------------------------------- ☕Support me at: ----------------------------------------------- Muscles of the shoulder joint - Deltoid - Subscapularis - Supraspinatus - Infraspinatus - Teres Minor - Teres Major Deltoid musculus deltoideus - Spinal Part O: Spine of Scapula spina scapulae - Acromial Part ○ O: Acromion of Scapula - Clavicular Part ○ O: Clavicle - I: Deltoid Tuberocity of Humerus tuberositas deltoidei humeri - Function: A: Abductio brachii C: Rotatio Brachii Interna S: Rotatio Brachii Externa S C = Adduction A C = Flexion A S = Extention - Subscapularis musculus subscapularis - O: Subscapular Fossa fossa subscapularis - I: Lesser tubercle crest of humerus tuberculum minus humeri et crista tuberculi minoris - F: Adduction, Internal Rotation Supraspinatus musculus supraspinatus - O: Supraspinous Fossa fossa supraspinata - I: Greater tubercle of humerus tuberculum majus humeri - F: Abduction Infraspinatus musculus infraspinatus - O: Infraspinous Fossa fossa infraspinata - I: Greater tubercle of humerus tuberculum majus humeri - F: External Rotation Teres Minor musculus teres minor - O: Lateral margin of Scapula margo lateralis scapulae - I: Greater tubercle of humerus tuberculum majus humeri - F: External Rotation, Extention Teres Major musculus teres minor - O: Inferior Angle of Scapula angulus inferior scapulae - I: Crest of lesser tubercle of humerus crista tuberculi mionoris humeri F: - Adduction - Extension - Internal rotation Rotator Cuff Muscles - Subscapularis musculus subscapularis - Supraspinatus musculus supraspinatus - Infraspinatus musculus infraspinatus - Teres Minor musculus teres minor - Stabilize the shoulder joint ○ Clinical Importance ⚠ § Rotator Cuff Tear § Tendinitis § Bursitis