Upper Extremities

Question 1

What are the rotator cuff muscles

Answer 1

Supraspinatus
Infraspinatus
Teres Minor
Subscapularis

Question 2

Shoulder dislocation vs shoulder separation

Answer 2

Shoulder dislocation - displacement of the bones of the glenohumeral joint

Shoulder separation - clavicle is torn away from the end of the acromion; occurs at acromioclavicular joint

Question 3

Anterior compartment of arm innervated by

Answer 3

MUSCULOCUTANEOUS NERVE

Question 4

Posterior compartment of arm innervated by

Answer 4

RADIAL NERVE

Question 5

Inability to supinate the forearm could be result of injury to what nerves

Answer 5

MUSCULOCUTANEOUS AND RADIAL NERVE

Question 6

Flexor muscles of forearm innervated by

Answer 6

MEDIAN NERVE except FCU & FDP (ulnar n.)

Question 7

Extensor muscle of forearm innervated by

Answer 7

RADIAL NERVE

Question 8

Golfer’s elbow?

Tennis elbow?

Answer 8

Golfer elbow

• medial epicondylitis
• inflammation of the common flexor tendon - medial epicondyle
• repetitive flexion and pronation of the forearm at the elbow

Tennis elbow

• lateral epicondylitis
• inflammation of the common extensor tendon
• lateral epicondyle
• result from forced extension and flexion of the forearm at the elbow

Question 9

Contents of the cubital fossa

Answer 9

Median nerve
Brachial artery
Biceps brachii tendon
Radial nerve

Question 10

What nerve is entrapped in carpal tunnel syndrome?

Answer 10

Median nerve within the carpal tunnel

Question 11

What nerve is damaged in the ff:
Wrist drop, Saturday night palay, honeymoon palsy, crutch palsy
Claw hand deformity
Ape hand; hand of benediction

Answer 11

Radial nerve injury = wrist drop
Ulnar nerve injury = claw hand deformity
Median nerve injury = 
Proximal: hand of benediction
Distal: ape hand, carpal tunnel syndrome

Question 12

Specific fractures in the upper extremity and the corresponding nerve injury

Surgical neck of humerus
Midshaft spiral fracture of humerus
Supracondylar fracture of humerus
Medial epicondyle fx
Hook of hamate fx

Answer 12

Axillary nerve - fx at surgical neck of humerus
Radial nerve - fx at midshaft spiral fracture of humerus
Median nerve (proximal) - supracondylar fx of humerus
Ulnar nerve (proximal) - medial epicondyle fx
Ulnar nerve (distal) - hook of hamate fx