Arm/Girdle OIAI-V

Latissimus Dorsi Origin

Spinous process of T7-L%, Thoracolumbar fascia, iliac crest

Latissimus Dorsi Insertion

Floor of the intertubercular groove, inferior angle of scapula

Latissimus Dorsi action

Adduct, extend, internally rotate shoulder

Latissimus Dorsi Innervation

Thoracocodorsal n. (C6,7,8)

Latissimus Dorsi Vascular supply

Thoracodorsal a.

Latissimus Dorsi derivation

Dorsal

Teres Major origin

Inferior angle of scapula

Teres major insertion

Medial intertubercular groove

Teres major action

Adduct, extend, internally rotate shoulder

Teres major Innervation

Lower subscapular n. (C5,6)

Teres major vascular supply

Subscapular a., posterior humeral circumflex a.

Teres major derivation

Dorsal

Levator scapulae origin

Transverse processes C1-C4

Levator scapulae insertion

Medial scapula from spine to superior angle

Levator scapulae action

Elevate and downwardly rotate scapula, laterally flex cervical spine (unilateral)

Levator scapulae Innervation

Dorsal scapular n. (C5)

Levator scapulae vascular supply

Dorsal scapular a.

Levator scapulae derivation

Dorsal

Rhomboid minor origin

Spinous processes C7-T1

Rhomboid minor insertion

Medial scapular border above spine

Rhomboid major origin

Spinous processes of T2-T5

Rhomboid major insertion

Medial scapular border below spine

Rhomboids action

Retract scapula, rotate glenoid inferiorly

Rhomboids Innervation

Dorsal scapular n.

Rhomboids vascular supply

Dorsal scapular a.

Rhomboids derivation

Dorsal

Serratus anterior origin

Lateral-most aspect of ribs 1-9

Serratus anterior insertion

Ventral surface of medial border of scapula

Serratus anterior action

Protract scapula, superiorly tilt glenoid/upward rotation

Serratus anterior Innervation

Long thoracic n. (C5,6,7)

Serratus anterior vascular supply

Lateral thoracic a., superiorly thoracic a.

Serratus anterior derivation

Dorsal

Deltoid origin

Scapular spine, acromion, distal clavicle

Deltoid insertion

Deltoid tuberosity - humerus

Deltoid action

Flexion of arm - anterior head, extension of arm - posterior head, abduction of arm - all 3

Deltoid Innervation

Auxiliary n. (C5,6)

Deltoid vascular supply

Deltoid branch of thoracoacromial trunk, posterior humeral circumflex a.

Deltoid derivation

Dorsal

Teres minor origin

Lateral border of scapula

Teres minor insertion

Greater tubercle

Teres minor action

External rotation of shoulder

Teres minor Innervation

Axiliary n. (C5,6)

Teres minor vascular supply

Circumflex scapular a., posterior humeral circumflex a.

Teres minor derivation

Dorsal

Supraspinatus origin

Supraspinous fossa

Suprispinatus insertion

Greater tubercle

Surpispinatus action

Abduction of arm

Suprispinatus Innervation

Suprascapular n. (C5,6)

Suprispinatus vascular supply

Suprascapular a.

Suprispinatus derivation

Dorsal

Infrispinatus origin

Infrispinatus fossa

Infrispinatus insertion

Greater tubercle

Infrispinatus action

External rotation of shoulder

Infraspinatus Innervation

Suprascapular n. (C5,6)

Infraspinatus vascular supply

Suprascapular a., circumflex scapular a.

Infraspinatus derivation

Dorsal

Subscapularis origin

Subscapular fossa

Subscapularis insertion

Lesser tubercle - humerus

Subscapularis action

Internal rotation of shoulder

Subscapularis Innervation

Upper and lower subscapular nn. (C5,6)

Subscapularis vascular supply

Subscapular a.

Subscapularis derivation

Dorsal

Pectoralis major origin

Medial clavicle - clavicular head

Anterior sternum and 1-6 costal cartilages - sternocostal head

Pectoralis major insertion

Lateral intertubercular groove

Pectoralis major action

Flexion of arm - clavicular, adduction of arm, internal rotation of arm, extension of arm from a flexed position

Pectoralis Major Innervation

Lateral pectoral n. (C5,6,7), medial pectoral n.

Pectoralis minor origin

Ribs 3-5

Pectoralis minor insertion

Coracoid process of scapula

Pectoralis minor action

Scapular depression, anterior tip of the scapula

Pectoralis minor Innervation

Medial pectoral n. (C8, T1)

Pectoralis Innervation

Pectoral branch of thoracoacromial trunk

Pectoralis derivation

Ventral

Subclavius origin

Rib 1

Subclavius insertion

Subclavian groove of clavicle

Subclavius action

Depresses clavicle

Subclavius Innervation

N. To Subclavius (C5,6)

Subclavius vascular supply

Clavicular branch of thoracoacromial trunk

Subclavius derivation

Ventral

Triceps brachii origin

Long head: infraglenoid tubercle of scapula

Lateral head: Postero-lateral humeral shaft

Medial head: posterior-medial humeral shaft

Triceps brachii insertion

Olecranon of humerus

Triceps brachii action

Elbow extension, shoulder extension (long head)

Triceps brachii Innervation

Radial n. (C5-T1)

Triceps brachii vascular supply

Deep a. Of arm, posterior circumflex humeral a.

Triceps brachii derivation

Dorsal

Anconeus origin

Superior to capitulum on posterior humerus

Anconeus insertion

Olecranon and proximal ulna

Anconeus action

Weak extension of the elbow, active during supination/pronation of forearm (for stability?)

Anconeus Innervation

Radial n. (C5-T1)

Anconeus vascular supply

Deep a. Of arm, middle collateral a.

Anconeus derivation

Dorsal

Biceps brachii origin

Short head - Coracoid

Long head - supraglenoid tubercle

Biceps brachii insertion

Radial tuberosity of radius, bicipital aponeurosis

Biceps brachii action

Flexion of shoulder, flexion of elbow, supination of the forearm

Coracobrachialis origin

Coracoid

Coracobrachialis insertion

Proximal humerus

Coracobrachialis action

Flexion of shoulder, adduction of shoulder

Brachialis origin

Anterior humerus

Brachialis insertion

Coronoid process of ulna

Brachialis action

Flexion of elbow

Biceps group Innervation

Musculocutaneous n. (C5,6,7)