Forearm/Hand

Question 1

Answer 1

Question 2

Elbow ligaments?

Answer 2

Radial collateral & Ulnar collateral

Question 3

UCL tear

Answer 3

Common in pitchers (tear of ulnar collateral ligament)

Question 4

Tommy John surgery

Answer 4

Repair of UCL tear using tissue from elsewhere in the body

Question 5

Funny bone?

Answer 5

Ulnar nerve is not protected

Question 6

Elbow flexors and extensors

Answer 6

Flexors: biceps brachii, brachialis, brachioradialis

Extensors: triceps brachii, anconeus

Question 7

Answer 7

Brachioradialis

Att: lateral epicondyle of humerus, radial styloid

Inn: radial nerve

Action: elbow flexion, supination

Question 8

Answer 8

Anconeus

Att: lateral epicondyle of humerus, olecranon process of ulna

Action: elbow extension, joint stabilization

Inn: radial nerve

Question 9

Styloid processes

Answer 9

Bump on wrist side of both radius and ulna

Question 10

Interosseous ligament

Answer 10

Between radius and ulna; stabilizes and site for muscle attachment

Question 11

Fused radius and ulna?

Answer 11

Horses - reduces range of motion but increases stability

Question 12

Answer 12

Radioulnar joint

Synovial, connects radial head to radial notch of ulna

Question 13

Muscles for forearm pronation and supination (i.e. palm facing down/up)?

Answer 13

Pronation: Pronator teres, Pronator quadratus

Supination: Supinator, Brachioradialis

Question 14

Radius and Ulna processes

Answer 14

Question 15

Answer 15

Pronator teres

Att: medial epicondyle of humerus, coronoid process of ulna, radial shaft

Action: pronation, weak elbow flexion

Inn: median nerve

Question 16

Answer 16

Pronator quadratus

Att: Distal radius, distal ulna

Action: pronation

Inn: median nerve

Question 17

Answer 17

Supinator

Att: lateral epicondyle of humerus, proximal radius, proximal ulna

Action: supination

Inn: radial nerve

Question 18

Name of thumb? Finger numbering?

Answer 18

Question 19

Answer 19

Question 20

Radiocarpal joint

Answer 20

Question 21

Wrist flexors / extensors? (Flexing is pointing hand down)

Answer 21

Flexors: flexor carpi radialis, flexor carpi ulnaris, palmaris longus

Extensors: extensor carpi radialis longus/brevis, extensor carpi ulnaris

Question 22

Answer 22

Question 23

Golfer’s elbow?

Answer 23

Inflammation/tearing of wrist flexor tendons

Question 24

Answer 24

Question 25

Tennis elbow?

Answer 25

inflammation/tearing of wrist extensor tendons

Question 26

Answer 26

Question 27

Knuckle cracking?

Answer 27

Pressure causes gas in sinovial fluid to create bubble, cracking = popping bubble

Question 28

Finger joints?

Answer 28

Metacarpophalangial and interphalangial

Question 29

Flexor sheath purpose

Answer 29

Prevent bowstringing

Question 30

Answer 30

Question 31

Answer 31

Question 32

Carpal tunnel ligament?

Answer 32

Flexor retinaculum

Question 33

Carpal tunnel syndrome

Answer 33

Repetitive motions lead to inflamation & impingement of median nerve

Question 34

FDS and FDP tendons

Answer 34

Flexor digitorum profundus tendon passes THROUGH flexor digitorum superficialis tendon

Question 35

Thenar and hypothenar?

Answer 35

Thenar = “thumb”

Hypothenar = “pinky”

Question 36

Answer 36

Question 37

Answer 37

Question 38

Answer 38

Question 39

Answer 39

Question 40

Answer 40

Question 41

Answer 41

Question 42

3 Hypothenar muscles?

Answer 42

Question 43

Answer 43

Question 44

Answer 44

Radial nerve

Innervates all muscles in posterior compartments, plus brachoradialis

Question 45

Answer 45

Question 46

Hand innervation: which muscles do Median vs Ulnar nerves innervate?

Answer 46