Anatomy of hand and wrist

Question 1

What is the only metacarpal with no distal or proximal IP joint?

Answer 1

1st - thumb

Question 2

main contributor of superficial palmar arch

Answer 2

ulnar artery

Question 3

Main contributor of deep palmar arch

Answer 3

radial artery

Question 4

Where do the superficial veins arise from in the arm?

Answer 4

dorsal venous arch

Question 5

Cephalic and basilic - median or lateral side

Answer 5

cephalic lateral

basilic median

Question 6

What vein connects the basilic and cephalic vein across the cubital fossa?

Answer 6

median cubital vein

Question 7

Lymph nodes which drain the upper limb

Answer 7

axillary

Question 8

8 flexor muscles of the forearm

Answer 8

pronator teres, FCR, Palmaris longus and FCU
FDS
FDP, FPL and pronator quadratus

Question 9

nerve supply of brachioradialis

Answer 9

radial nerve

Question 10

action of the forearm flexors

Answer 10

flex wrist

Question 11

FCU action on wrist

Answer 11

adducts

Question 12

FCR action on wrist

Answer 12

abduction

Question 13

2 muscles responsible for wrist pronation

Answer 13

pronator teres

pronator quadratus

Question 14

Where does FDS attach?

Answer 14

middle phalanges of digits 2-5

Question 15

Where does FDP and FPL attach?

Answer 15

distal phalanges

Question 16

FDS, FDP and FPL action

Answer 16

flex proximal and distal IP joint

Question 17

forearm flexors actions

Answer 17

extend wrist and digits

Question 18

ECU action

Answer 18

adducts

Question 19

ECRL and ECRB action

Answer 19

abduction

Question 20

supination of wrist

Answer 20

biceps brachii and supinator

Question 21

extensor digiti minimi and extensor digitorum action

Answer 21

extend fingers, elbow and wrist

Question 22

3 tendons comprising anatomical snuffbox

Answer 22

EPL
EPB
APL

Question 23

5 things felt in anatomical snuffbox

Answer 23

radial styloid process
radial artery 
trapezium 
scaphoid 
base of 1st metacarpal

Question 24

what runs in the carpal tunnel?

Answer 24

9 tendons of FDS,FDP and FPL and median nerve

Question 25

Innervation of hand muscles and exception

Answer 25

ulnar nerve

median nerve - APB, FPB, OPB and lumbricals 1-2

Question 26

Name the 4 thenar muscles

Answer 26

flexor pollicis brevis
abductor pollicis brevis
adductor pollicis
opponens pollicis

Question 27

Name the 3 hypothenar muscles

Answer 27

flexor digiti minimi
abductor digiti minimi
opponens digiti minimi

Question 28

Where do the lumbricals originate?

Answer 28

FDP tendons

Question 29

Action of lumbricals

Answer 29

flex MCP joint

extend PIP joint

Question 30

Importance of scaphoid blood supply

Answer 30

retrograde - distal to proximal

more proximal a fracture the more likely AVN

Question 31

What is used as a landmark for the approach to radius?

Answer 31

FCR

Question 32

How is palmaris longus tendon and the importance

Answer 32

wrist slightly flexed and oppose thumb to little finger

tendon transfer - autografts

Question 33

Test FDP

Answer 33

isolate DIPJ in that finger

Question 34

How to test FDS

Answer 34

take out FDP

hold other fingers down as FDP has common muscle belly

Question 35

Allens tests

Answer 35

occlude both arteries at wrist and clench until blanched

release ulnar nerve - reperfuse in 15s

Question 36

When is it useful to do allens test?

Answer 36

before radial artery for repeated ABG or arterial lines