Upper Arm

Question 0

What could cause impingement or damage of radial n superior portions

Answer 0

Crutches
Saturday night palsy
Post dislocation of numeral jt

Question 1

If radial n is injured superior to its branches what are the results

Answer 1

Paralysis of triceps brachii, brachioradialis, supinators, and extensors of wrist

Question 2

What are the characteristic symptoms of a superiorly damaged radial n

Answer 2

Wrist drop- cant extend fingers @ MP joint, wrist flexes since its not opposed by the flexors
Loss of sensation to posterior arm, forearm, dorsal hand, and lateral fingers

Question 3

If a person has a wrist drop disability, what would likely to have been injured

Answer 3

The radial nerve

Question 4

What makes up the contents of the cubical fossa

Answer 4

Terminal brachial artery
Biceps brachii tendon
Median n
Radial n
Median cubital vein
Median, lateral antebrachial cutaneous

Question 5

What unites the ulna the radius

Answer 5

Interosseous membrane

Question 6

What is the directionality of the heads of radius and the ulna

Answer 6

Radial head: proximal

Ulnar head: distal

Question 7

What are the ligaments of the elbow

Answer 7

Anular l.
Oblique cord
Interosseous membrane
Radial and ulnar collateral ligament
Joint capsule

Question 8

How many compartments of antebrachial fascia

Answer 8

2-
Anterior compartment ( flexor )
Posterior compartment ( extensors )

Question 9

What fascias create the carpal tunnel

Answer 9

Palmar carpal ligament

Flexor retinaculum

Question 10

Which part of humerus do the extensor muscles attach

Answer 10

Lateral epicondyle and supercondylar ridge

Question 11

Which part of humerus do the flexors attach to

Answer 11

Medial epicondyle and supracondylar ridge

Question 12

Most flexors and pronators are innervated by what structures

Answer 12

Median n

Radial and ulnar aa

Question 13

What are the exceptions to the typical innervations of the anterior compartment of the forearm

Answer 13

Flexor Carpi ulnaris ( ulnar n)

Flexor digitorum profundis ( 1/2 ulnar n)

Question 14

What are the muscles of the superficial flexor compartment

Answer 14

Pronators teres m
Flexor Carpi radialis m
Palmaris longus m
Flexor Carpi ulnaris

Question 15

What are the muscle of the intermediate layer of the flexor compartment

Answer 15

Flexor digitorum superficialis

Question 16

What are the muscles of the deep layer of the flexor compartment

Answer 16

Flexor digitorum profundis m
Flexor pollicis longus m
Pronator quadratus m

Question 17

What is one common site of impingement of the median nerve in the anterior forearm

Answer 17

Two heads of pronators teres

Question 18

What is a common site of impingement of the ulnar n

Answer 18

When the ulnar n passes through the cubital tunnel

Formed by the numeral and ulnar heads of the flexor Carpi ulnaris

Question 19

What muscle is the only muscle to flex the interphalangeal joint of the thumb

Answer 19

Flexor pollicis longus

Question 20

Which muscle is the only muscle that can flex the DIP

Answer 20

Flexor digitorum profundus

Question 21

Which muscle is the prime mover of forearm pronation

Answer 21

Pronators quadratus

Question 22

What is the pathology of medial epicondylitis

Answer 22

Inflammation of the common flexor tendon

Treated with RICE

Question 23

What motions are lost with an injury to the median n at the elbow/forearm

Answer 23

Loss of flexion to the PIP of digits 1-3
Weakened flexion of the PIP of the 4-5 digits
Loss of flexion in DIPs in the 2-3 digits

Question 24

What are the characteristics of an injury to the median n at the elbow/forearm

Answer 24

Hand of benediction

Reduced muscle mass in the thenar mm.

Question 25

True/False: impingement of AIN affects the thenar mm

Answer 25

False the FDP and the FPL are affected, just can’t make the “ok” hand sign

Question 26

What is pronators syndrome

Answer 26

Nerve entrapment of the median n between the heads of pronators teres