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Shoulder Lecture
Gross Anatomy of the Shoulder Joint
Question | Answer |
---|---|
Components of Shoulder Girdle | Scapula, Clavicle, and Manubrium |
Angles and Borders of Scapula | Superior Angle (@ T2) and Inferior Angle (@ T7) and Vertebral/Axillary Borders |
Processes and Notches of Scapula | Acromion/Coracoid Process and Suprascapular/Spinoglenoid Notches |
Scapular Fossa | Glenoid Fossa, Supraspinous Fossa, Infraspinous Fossa, and Subscapular Fossa |
Scapular Tubercles | Supraglenoid and Infraglenoid Tubercles |
Clavicle Landmarks | Proximal/Sternal End (Rounded), Acromial End (Flatter), Trapezoid Line, Conoid Tubercle, Subclavius Groove |
5 Muscles that Attach to Clavicle | Subclavius, Sternocleidomastoid, Trapezius, Deltoid, and Pec Major |
3 Sections of Sternum | Manubrium, Body, and Xiphoid Process |
Sternal Landmarks | Sternal Angle, Jugular Notch, Rib Facets (1-7), Articular Surfaces for Clavicles |
Anterior Deltoid Prox. | Clavicle |
Middle Deltoid Prox. | Acromion, Clavicle, Scapular Spine |
Posterior Deltoid Prox. | Scapular Spine |
Deltoid Dist. | Deltoid Tuberosity |
Deltoid Anterior Act. | Glenohumeral Flexion |
Deltoid Middle Act. | Glenohumeral ABduction (supraspinatus initiates) |
Deltoid Posterior Act. | Glenohumeral Extension |
Deltoid Inn. | Axillary Nerve |
4 Scapular Muscles (Rotator Cuff) | Supraspinatus, Infraspinatus, Teres Minor, Subscapularis |
Supraspinatus Prox. | Supraaspinous Foss |
Supraspinatus Dist. | Greater Tubercle of Humerus |
Supraspinatus Act. | ABduction of Humerus |
Supraspinatus Inn. | Suprascapular Nerve |
Coracoacromial Arch Components | Acromion, Coracoid Process, Coracoacromial Ligament, Supraspinatus Runs Through Arch |
Infraspinatus Prox. | Infraspinous Fossa |
Infraspinatus Prox. | Greater Tubercle of Humerus |
Infraspinatus Act. | External Rotation |
Infraspinatus Inn. | Suprascapular Nerve |
Subscapularis Prox. | Subscapular Fossa |
Subscapularis Dist. | Lesser tubercle of humerus |
Subscapularis Act. | Internal Rotation |
Subscapularis Inn. | Upper/Lower Subscapular Nerves |
Teres Minor Prox. | Superior lateral scapular border |
Teres Minor Dist. | Greater tubercle of humerus |
Teres Minor Act. | External Rotation |
Teres Minor Inn. | Axillary Nerve |
Teres Major Prox. | Dorsal inferior scapular angle |
Teres Major Dist. | Medial intertubercular groove |
Teres Major Act. | ADduction and IR of Humerus |
Teres Major Inn. | Lower Scapular Nerve |
Borders of Quadrilateral Space | Teres Minor/Major, Triceps Long Head, Humerus |
Contents of Quadrilateral Space | Posterior Humeral Circumflex Artery and Axillary Nerve |
Borders of Triangular Space | Teres Minor/Major and Medial Long Head of Triceps |
Contents of Triangular Space | Circumflex Scapular Artery and Vein |
Borders of Internal Triangle | Teres Major, Long and Lateral Head of Triceps, and Humerus |
Contents of Internal Triangle | Radial Nerve and Deep Profunda Artery/Vein |
Suprascapular Nerve | Runs along suprascapular ligament and innervates Infraspinatus |
Axillary Nerve | Innervates Deltoid and Teres Minor |
3 Branches of Subclavian Artery | Transverse Cervical, Dorsal Scapular, and Suprascapular |
3 Branches of Axillary Artery | Posterior Humeral Circumflex, Anterior Humeral Circumflex, and Subscapular |
Typically the __ branches off more proximal to the heart than the __. (Ant/Post Humeral Circumflex Arteries) | Posterior more proximal than Anterior |
Veins of Shoulder Region | Subclavian, Axillary, Basilic, Cephalic |