Shoulder

Relations of supraspinatus, infraspinatus and tres minor muscles to shoulder joint, superior view

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Image #94-1

Shoulder Relations of supraspinatus, infraspinatus and tres minor muscles to shoulder joint, superior view The specimen shown in 93-6 is viewed here from above and somewhat laterally. The approximate positions of the insertions of the supraspinatus, infraspinatus and teres minor muscles into the greater tubercle and shaft of the humerus are indicated in the drawing at 3, 5, and 7. 1 . Serratus anterior muscle 2 . Coracoid process of scapula 3 . Position of facet on greater tubercle of humerus for tendon of supraspinatus muscle 4 . Biceps brachii muscle (long head) 5 . Position of facet on greater tubercle of humerus for tendon of infraspinatus muscle 6 . Body of humerus 7 . Area of insertion of teres minor muscle 8 . Triceps brachii muscle (lateral head) 9 . Posterior circumflex artery of humerus (cut off) 10 . Teres minor muscle 11 . Muscular branch axillary nerve (cut off) 12 . Triceps brachii muscle (long head) 13 . Teres major muscle 14 . Angle of acromion 15 . Infraspinatus muscle 16 . Rib I 17 . Clavicle 18 . Axillary vein 19 . Axillary artery 20 . Upper pointer: External jugular vein (cut off) Lower pointer: Supraclavicular part of brachial plexus 21 . Coracoacromial ligament 22 . Suprascapular nerve 23 . Omohyoid muscle (cut off) 24 . Position of acromioclavicular joint 25 . Acromion of scapula 26 . Serratus anterior muscle 27 . Supraspinatus muscle 28 . Spine of scapula