wrist and hand anatomy

Question 1

label

Answer 1

red = scaphoid

light blue = lunate

green = triquetrum

pink = hamate

grey = capitate

black = trapezoid

peach = trapezium

Question 2

label

attatchments

Answer 2

red = brachioradialis - lateral supracondylar ridge on humerus to distal radius

blue = extensor carpi radialis longus (lateral supracondylar ridge on humerus to 2nd metacarpal base)

brevis (shorter one) - CEO to base of 3rd metacarpal

yellow = extensor digitorum - CEO to extensor hood of 4 digits

pink = extensor carpi ulnaris - CEO to base of 5th metacarpal

orange = anconeus CEO to proximal ulna

Question 3

label

Answer 3

yellow = supinator - CEO to proximal radius

red = abductor pollucis longus - interosseous membrane to base og 1st (thumb) metacarpal

orange = extensor pollicis longus and brevis - interosseous membrnae to base of distal (longus) and proximal (brevis) phalangx

blue = extensor indices - interosseous memnrane to extensor hood of index

Question 4

what are these?

Answer 4

thenar eminence muscles

red = flexor pollicis brevis

blue = abductor pollicis brevis

green = opponens pollicis

Question 5

what is this

Answer 5

hypothenar eminence

green = flexor digiti minimi brevis

red = abductor digiti minimi

blue = opponens digiti minimi

Question 6

what are these?

Answer 6

interossei muscles

3 PADS = palmar adductors

4 DABs = dorsal abductors

Question 7

what is this

Answer 7

adductor pollicis

2 heads

Question 8

label

Answer 8

carpal tunnel

pink = flexor retinaculum (roof)

yellow = median nerve

green = tendons of flexor digitorum superficialis

blue = tendons of flexor digitorum profundus

red = tendon flexor pollicis longus

Question 9

what is the nerev innervation of posterior arm?

Answer 9

all radial nerve

Question 10

what are the 3 wrist extenders?

3 finger extenders?

3 others?

3 thumb movers?

Answer 10

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

extensor digiti minimi, extensor indicis, extensor digitorum

supinator, anconeus, brachioradialis

extensor pollicis longus, extensor pollicis brevis, abductor pollicis longus

Question 11

nerve supply to hand?

Answer 11

palmer and posterior hand ulna nerve = pinky and half of ring

palmar = median nerve is centre of hand + thumb

palmar = radial = under thumb

posterior = radial = middle of hand

posterior = median = tips of fingers (from middle to pinky)

Question 12

motor supply to hand?

Answer 12

median nerve = LOAF (lateral 2 lumbricals, opponens polluicis, abductor pollicis brevis, flexor pollicis brevis)

ulna = everything else

Question 13

blood vessels in hand

Answer 13