Movements of the shoulder Flashcards
Muscles involved in the movements of the shoulder
Name the muscles involved in the abduction of the shoulder
Deltoid (middle fibres), supraspinatus (first 10-15 degrees)
Name the origin and insertion of the deltoid
O: lateral 1/3 clavicle + acromion + spine of scapula
I: deltoid tuberosity of humerus
Name the origin and insertion of the supraspinatus
O: supraspinous fossa of scapula
I: greater tubercle of humerus
Name the muscles involved in the adduction of the shoulder
Latissimus dorsi, teres major, pectoralis major, coracobrachialis
Name the origin and insertion of the latissimus dorsi
O: ilium + thoracolumbar fascia + spinous process of lower 6 thoracic verterbrae
I: floor of bicipital groove of humerus
Name the origin and insertion of the teres major
O: inferior 1/3 posterior lateral border of scapula
I: medial lip of bicipital groove of humerus
Name the origin and insertion of the pectoralis major
O: clavicle + costal cartilage ribs 1-6 + sternum
I: outer lip of bicipital groove of humerus
Name the origin and insertion of the coracobrachialis
O: coracoid process of scapula
I: medial mid-shaft humerus
Name the muscles involved in the extension of the shoulder
Triceps brachii LoH, deltoid (posterior fibres), latissimus dorsi
Name the origin and insertion of the triceps brachii LoH
O: infraglenoid tubercle of scapula
I: olecranon of ulna
Name the origin and insertion of the deltoid
O: lateral 1/3 clavicle + acromion + spine of scapula
I: deltoid tuberosity of humerus
Name the origin and insertion of the latissimus dorsi
O: ilium + thoracolumbar fascia + spinous process of lower 6 thoracic vertebrae
I: floor of bicipital groove of humerus
Name the muscles involved in flexion of the shoulder
Pectoralis major, coracobrachialis, biceps brachii LH
Name the origin and insertion of the pectoralis major
O: clavicle + costal cartilage ribs 1-6 + sternum
I: outer lip of bicipital groove of humerus
Name the origin and insertion of the coracobrachialis
O: coracoid process of scapula
I: medial mid-shaft humerus
Name the origin and insertion of the biceps brachii LH
O: supraglenoid tubercle
I: posterior radial tuberosity + tendon forms bicipital aponeurosis
Name the muscles involved in the medial rotation of the arm
Subscapularis, deltoid (anterior fibres), latissimus dorsi, teres major
Name the origin and insertion of the subscapularis
O: subscapularis fossa
I: greater tubercle humerus
Name the origin and insertion of the deltoid
O: lateral 1/3 clavicle + acomion + spine of scapula
I: deltoid tuberosity of humerus
Name the origin and insertion of the latissimus dorsi
O: ilium + thoracolumbar fascia + spinous process of lower 6 thoracic vertebrae
I: floor of bicipital groove of humerus