Hand

Question 1

List the groups of intrinsic muscles of the hand

Answer 1

Thenar
Hypothenar
Lumbricals
Interossei
Palmaris brevis
Adductor pollicis

Question 2

List the thenar muscles of the hand

Answer 2

Opponens pollicis
Abductor pollicis brevis
Flexor pollicis brevis

Question 3

Which movements does opponens pollicis enable?

Answer 3

Thumb: flexion at CMJ (opposition)

Question 4

Which movements does abductor pollicis brevis enable?

Answer 4

Thumb: abduction, opposition, extension

Question 5

Which movements does flexor pollicis brevis enable?

Answer 5

Thumb: flexion

Question 6

What is the main nerve supply to the thenar muscles?

Answer 6

Median nerve

Question 7

List the hypothenar muscles of the hand

Answer 7

Opponens digiti minimi
Abductor digiti minimi
Flexor digiti minimi brevis

Question 8

Which movements does opponens digit minimi enable?

Answer 8

Little finger: rotation, opposition

Question 9

Which movements does abductor digiti minimi enable?

Answer 9

Little finger: abduction

Question 10

Which movements does flexor digiti minimi enable?

Answer 10

Little finger: flexion

Question 11

What is the main nerve supply to the hypothenar muscles?

Answer 11

Ulnar nerve

Question 12

How many lumbrical muscles are in the hand?

Answer 12

4 (one for each finger)

Question 13

What is the nerve supply to the lumbricals?

Answer 13

Median nerve (1-2)
UInar nerve (3-4)

Question 14

Which movements do the lumbricals enable?

Answer 14

MCPJ: flexion
IPJ: extension

Question 15

How many interossei muscles are in the hand?

Answer 15

7

4 dorsal, 3 palmar

Question 16

What is the nerve supply to the interossei?

Answer 16

Ulnar nerve

Question 17

Which movements do the interoessei enable?

Answer 17

Dorsal interossei: abduction at MCPJ
Palmar interossei: adduction at MCPJ
(PAd DAb)

Question 18

What is the nerve supply to palmaris brevis?

Answer 18

Ulnar nerve

Question 19

Which movements does palmaris brevis enable?

Answer 19

Hand: improve grip

Question 20

What is the nerve supply to adductor pollicis?

Answer 20

Ulnar nerve

Question 21

Which movements does adductor pollicis enable?

Answer 21

Thumb: adduction

Question 22

A useful mnemonic for the thenar + hypothenar hand muscles:

All For One And One For All

Answer 22

HYPOTHENAR:
Abductor digiti minimi
Flexor digiti minimi brevis
Opponense digiti minimi (DEEP)
Adductor pollicis

THENAR:
Opponens pollicis
Flexor pollicis brevis
Abductor pollicis brevis

Question 23

What bone movement occurs in pronation?

Answer 23

Radius moves over ulna

Question 24

What type of joint is the radiocarpal joint?

Answer 24

Elipsoid joint

Question 25

The radial artery contributes to the deep/superficial palmar arch

Answer 25

Deep

Question 26

The ulnar artery contributes to the deep/superficial palmar arch

Answer 26

Superficial

Question 27

What is the lymph drainage of the upper limb?

Answer 27

Cubital and axillary nodes

Question 28

What is the most common carpal bone fracture? This leads to pain in the...

Answer 28

Anatomical snuffbox

Question 29

Carpal tunnel syndrome involves compression of the... | This leads to weakness in which muscles?

Answer 29

Median nerve | Thenar muscles

Question 30

Cubital tunnel syndrome involves compression of the...

Answer 30

Ulnar nerve

Question 31

What movements do the interrosei enable?

Answer 31

Dorsal abduct digits (DAB) | Palmar adduct digits (PAD)

Question 32

What intrinsic hand muscles does the median nerve supply?

Answer 32

``` LOAF Lateral 2 lumbricals Opponens pollicis Abductor pollicis brevis Flexor pollicis brevis (All rest are ulnar) ```

Question 33

Dupuytren's contracture involves thickening of the...

Answer 33

Palmar fascia

Question 34

What is the function of the flexor tendon sheaths?

Answer 34

Reduce friction in tendons via synovial covering

Question 35

What is trigger finger? How is it tested for?

Answer 35

Nodule rubs on A1 pully | Patient can't make fist (cant fully extend digits)

Question 36

Boutinniere deformity involves what movement at the PIP and DIP joints, respectively?

Answer 36

Flexion | Hyperextension

Question 37

Swan neck deformity involves what movement at the PIP and DIP joints, respectively?

Answer 37

Hyperextension | Flexion