Upper Extremity Flashcards
What are the static stabilizers of the shoulder (7)?
Glenohumeral ligament (superior, middle, inferior) Coracohumeral ligament Coracoclavicular ligament Coracoacromial ligament Acromioclavicular ligament
What are the 3 elbow ligaments?
Annular ligament
Radial collateral ligament
Ulnar ligament
What are the 7 forearm and hand ligaments?
Radioulnar Radiocarpal Ulnocarpal Intercarpal Carpometacarpal Metacarpophalangeal Interphalangeal
What are the 3 metacarpophalangeal ligaments?
Volar plates
Collateral ligaments
Transverse metacarpal ligaments
What are the 2 interphalangeal ligaments?
Volar plates
Collateral ligaments
What are the branches of Part I of the axillary artery?
Superior thoracic artery
What are the branches of Part II of the axillary artery?
Thoracoacromial trunk
Lateral thoracic artery
What are the branches of Part III of the axillary artery?
Subscapular artery
Anterior humeral circumflex artery
Posterior humeral circumflex artery
What does the axillary artery branch into?
Brachial artery
Deep brachial artery
What are the arteries of the hand?
Radial artery Ulnar artery Superficial palmar arches Deep palmar arches Digital arteries
What are the contents of the anatomical snuff box?
Radial artery
Scaphoid
Superficial branch of the radial nerve
What are the boundaries of the anatomical snuffbox?
Extensor pollicis longus
Extensor pollicis brevis
Abductor pollicus longus
What are the main veins of the arm?
Cephalic
Basilic
Median cubital vein
Action of pectoralis major
ADDuction, internal rotation, and flexion of shoulder
Nerve supply of pectoralis major
Lateral pectoral nerve
Medial pectoral nerve
Blood supply of pectoralis major
Pectoral artery
Action of pectoralis minor
Stabilizes scapula
Protraction, depression, downward rotation of scapula
Nerve supply of pectoralis minor
Medial pectoral nerve
Blood supply of pectoralis minor
Pectoral artery
Action of serratus anterior
Protraction of scapula
Upward rotation of scapula
Holds scapula to thoracic wall
Nerve supply of serratus anterior
Long thoracic nerve
Blood supply of serratus anterior
Lateral thoracic nerve
What would a “winged” scapula indicate?
Damage to the long thoracic nerve
Action of the superior, middle, and inferior trapezius
Superior: elevates scapula
Middle: retracts scapula
Inferior: depresses scapula
All: glenoid rotation
Nerve supply of the trapezius
Spinal accessory nerve (CN XI)
Blood supply of the trapezius
Transverse cervical artery
Action of latissimus dorsi
Extends, ADDuction, and internally rotates shoulder
Nerve supply of latissimus dorsi
Thoracodorsal nerve
Blood supply of latissimus dorsi
Thoracodorsal artery
Action of anterior, middle, and posterior deltoid
Anterior: flexes shoulder
Middle: abducts shoulder
Posterior: extends/externally rotates shoulder
Nerve supply of deltoid
Axillary nerve
Blood supply of deltoid
Posterior circumflex humeral artery (PCHA)
Action of teres minor
External rotation of shoulder
Stabilization of glenohumeral joint
Nerve supply of teres minor
Axillary nerve
Blood supply of teres minor
Posterior circumflex humeral artery (PCHA)
Action of teres major
ADDuction, extension, and internal rotation of shoulder
Nerve supply of teres major
Lower subscapular nerve
Blood supply of teres major
Circumflex scapular artery
What nerve would most likely be affected in anterior shoulder dislocations?
Axillary nerve
What are the rotator cuff muscles (dynamic stabilizers)?
SITS
Supraspinatus
Infraspinatus
Teres minor
Subscapularis
Action of subscapularis
Internal rotation and ADDuction of shoulder
Stabilization of glenohumeral joint
Nerve supply of subscapularis
Upper subscapular nerve
Lower subscapular nerve
Blood supply of subscapularis
Circumflex scapular artery
Action of infraspinatus
External rotation of shoulder
Stabilization of glenohumeral joint
Blood supply of infraspinatus
Suprascapular artery
Nerve supply of infraspinatus
Suprascapular nerve
Action of supraspinatus
Abduction of shoulder
Stabilization of glenohumeral joint
Nerve supply of supraspinatus
Suprascapular nerve
Blood supply of supraspinatus
Suprascapular artery
What is the most commonly damaged muscle in rotator cuff tears?
Supraspinatus
Action of biceps brachii
Flexion of shoulder
Flexion of elbow
Supination of forearm
Nerve supply of biceps brachii
Musculocutaneous nerve
Blood supply of biceps brachii
Brachial artery
Action of brachialis
Flexion of elbow
Nerve supply of brachialis
Musculocutanous nerve
Blood supply of brachialis
Brachial artery
Action of choracobrachialis
Flexion and ADDuction of shoulder
Nerve supply of choracobrachialis
Musculocutaneous nerve
Blood supply of choracobrachialis
Brachial artery
What are the extensors of the elbow?
Triceps brachii
Anconeus
Action of the triceps brachii
Extension of elbow
Extension of shoulder
Nerve supply of triceps brachii
Radial nerve
Blood supply of triceps brachii
Brachial profunda artery
Action of anconeus
Extension of elbow
Nerve supply of anconeus
Radial nerve
Blood supply of anconeus
Recurrent interosseous artery
What are the muscles of the superficial anterior compartment of the forearm?
Pronator teres
Flexor carpi radialis
Palmaris longus
Flexor carpi ulnaris
What are the muscles of the intermediate anterior compartment of the forearm?
Flexor digitorum superficialis
What are the muscles of the deep anterior compartment of the forearm?
Flexor digitorum profundus
Flexor pollicus longus
Pronator quadratus