Wrist-Hand Complex

Question 1

What are the 8 carpal bones?

Answer 1

Some Lovers Try Positions That They Can’t Handle

Scaphoid, lunate, triquetrum pisiform, trapezium, trapezoid, capitate, hamate

Question 2

Flexors of wrist

Answer 2

flexor carpi ulnaris, flexor carpi radialis, palmaris longus

Question 3

Extensors of wrist

Answer 3

extensor carpi radialis longus, extensor carpi radialis brevis, extersor carpi ulnaris

Question 4

Wrist flexors all originate ________.

Wrist extensors all originate ________.

Answer 4

Flexors = Medially
Extensors = Laterally

Question 5

What muscles are for radial deviation?

Answer 5

Extensor carpi radialis longus, extensor carpi radialis brevis, flexor carpi radialis. (duh Nichole, all the ones on the radial side)

Question 6

What muscles are for ulnar deviation?

Answer 6

Extensor carpi ulnaris, flexor carpi ulnaris.

Question 7

What is a colles fracture?

Answer 7

Fx of distal end of radius

Question 8

What is wrist drop deformity?

Answer 8

damage to radial nerve, cannot extend wrist and fingers

Question 9

What is the flexor retinaculum?

Answer 9

forms the roof of the carpal tunnel

Question 10

What are the extrinsic muscles of the thumb?

Answer 10

Extensor pollicis longus, extensor pollicis brevis, abductor pollicis longus, flexor pollicis longus
(longus= extrinsic! only 1 brevis is extrinsic)

Question 11

What are the intrinsic muscles of the thumb?

Answer 11

FLexor pollicis brevis, abductor pollicis brevis, adductor pollicis, opponens pollicis

Question 12

Which muscles are in the thenar eminence?

Answer 12

flexor pollicis brevis, abductor pollicic brevis, opponens pollicis (basically all but one of the intrinsics)

Question 13

What are the extrinsic muscles of the fingers?

Answer 13

extensor digitorum communis, extensor indicis proprius, extensor digiti minimi, flexor digitorum superficialis, flexor digitorum profundus

Question 14

What are the intrinsics of the fingers?

Answer 14

dorsal interossei, palmar interossei, lumbricales, flexor digiti minimi, abductor digiti minimi, opponens digiti minimi

Question 15

Which muscles make up the hypothenar eminence?

Answer 15

The digiti minimi muscles, abductor, flexor, and opponens

Question 16

What movement is produced by the dorsal interossei?

Answer 16

abduction

Question 17

What movement is produced by the palmar interossei?

Answer 17

Adduction

Question 18

Carpal tunnel syndrome is compression of what nerve?

Answer 18

Median

Question 19

Thumb musculature is innervated by what nerve?

Answer 19

median

Question 20

What is mallet finger?

Answer 20

tear of extensor tendon at distal phalanx

Question 21

What is boutonniere deformity?

Answer 21

proximal phalanx extends and middle phalanx flexes due to rupture of extensor tendon at middle phalanx

Question 22

What is DeQuervain’s?

Answer 22

tenosynovitis of thumb abductors, pain and swelling

Question 23

What is dupuytren’s contracture?

Answer 23

contracture of palmar fascia causing flexion contracture of finger

Question 24

The radial nerve supplies what muscle groups?

Answer 24

Extensor-supinators

Question 25

The median nerve supplies what muscle groups?

Answer 25

flexor-pronator and muscles on radial side of hand

Question 26

The ulnar nerve supplies what muscle groups?

Answer 26

muscles on ulnar side of wrist and hand, intrinsic muscles of hand and pinky

Question 27

Damage to the radial nerve could cause lack of sensation in what part of the hand?

Answer 27

dorsal radial surface of the hand

Question 28

Damage to the median nerve could cause lack of sensation in what part of the hand?

Answer 28

palm and dorsal portion of distal phalanges of first 2 fingers, 1/2 of ring finger

Question 29

Damage to the ulnar nerve could cause lack of sensation in what part of the hand?

Answer 29

Ulnar side, 1/2 of ring finger and little finger.