Anatomy Of Shoulder Region Flashcards
Ligaments of shoulder joint?
Coracoclavicular
Coracoacromial
Glenohumeral:
Superior middle and inferior
Which joint prevent superior dislocation?
Coracoacromial
Deltoid muscle origin, insertion and role?
Origin- spine of scapula and acromion, clavicle
Inserts onto deltoid tuberosity
Abduction
Anterior fibres of deltoid help with?
Flexion and medial rotation
Posterior fibres of deltoid do?
Extension, lateral rotation
Deltoid is supplied by?
Axillary nerve
Adduction of arm done by?
Latissimus dorsi, pec major
Overhead abduction muscles helping?
Trapezius and serratus anterior
Overhead Adduction of arm?
Levator scapulae and rhomboids
Long head of biceps joins at?
Supraglenoid tubercle
Brachialis only helps with?
Flexion of forearm
Long head of triceps joins at?
Infraglenoid tubercle
Starts at olecranon
Which dislocation of shoulder is common?
Anterior, humeral head descends down then anterior
Glenoid labrum is?
Cartilage deepens glenoid fossa
What runs through bicipital groove?
Long head of biceps
Which ligament runs over bicipital groove?
Transverse humeral ligament
Subscapularis inserts onto?
Lesser tubercle
Teres minor comes from?
Lateral border of scapula
Which muscle initiates of abduction?
Supraspinatus, initial 10-15 degrees
Infraspinatus and teres minor are?
Lateral rotators
Subscapularis action?
Medial rotation
Supraspinatus injury?
Decreasing of fluid in subacromial bursa,
Impingement of supraspinatus