Axilla, Arm and Elbow Flashcards
Anterior border of Axilla
Pectoralis Major and Pectoralis Minor
Posterior border of Axilla
Subscapularis, Latissimus Dorsi and Teres Major - scapula
Medial Border of Axilla
Ribs 1-4 and intercostal spaces
Lateral Border of Axilla
Intertubercular groove of humerus
Base of Axilla
Skin and Fascia of Arm
Apex of Axilla
Convergence of Clavicle, Scapula and Rib 1
Contents of the Axilla
Axillary Artery, Axillary Vein, Lymphatics and Brachial Plexus
Articulations involved in the Elbow Joint?
Humeroulnar - Hinge
Humeroradial - Modified Hinge
Proximal - Radioulnar
Function of Annular Ligament?
Encircle head of radius and keep it against the ulna
Monteggia Fracture
dislocation of proximal radioulnar joint with a forearm fracture
Lateral collateral ligament function?
Protects against medial deviation of forearm
Medial collateral ligament function?
Protects against lateral deviation of forearm; Medial epicondyle of humerus to coronoid and olecranon process
CRTU
Capitulum of humerus with radius
Trochela of humerus with ulna
Supination
Radial head spins on capitulum
Name the Anterior Compartment Arm muscles
Biceps Brachii
Brachialis
**Coracobrachialis = intrinsic shoulder muscle
Name the Posterior compartment arm muscles
Triceps Brachii
Anconeus
Brachioradialis
Biceps Brachii Attachments
2 Heads
Long head: Supraglenoid tubercle
Short head: Coracoid process of scapula
Radial tuberosity
Biceps Brachii action
Flexion of elbow
Biceps brachii Innervation
Musculocutaneous Nerve
Brachialis Attachments
Distal anterior humerus
Coronoid process of ulna
Brachialis Action
Flexion of forearm/elbow
Brachialis Innervation
Musculocutaneous Nerve
Triceps Brachii Attachments
Long head: infraglenoid tubercle
Lateral head: posterior sup. humerus
Medial head: posterior inf. humerus
I: olecranon of ulna
Triceps Brachii Action
Extension of elbow
