ant forearm

Question 1

what is the main inv of the ant forearm

Answer 1

Median (ulnar has 1.5 digit inv)

Question 2

muscles in 1st layer

Answer 2

1. pronator teres
2. flexor carpi radialis
3. palmaris l
4. flexor carpi ulnaris

Question 3

muscle in 2nd layer

Answer 3

flexor digitorum superficialis

Question 4

muscles in 3rd layer

Answer 4

flexor digitorum profundus

flexor pollicis longus

Question 5

muscles in 4th layer

Answer 5

pronator teres

Question 6

what is the only muscle that flexes distal interpharengeal j

Answer 6

flexor digitorum profundus

Question 7

how to test the interosseus n

Answer 7

doing OK sign

Question 8

what nerve adheres to the deep surface of the flexor digitorum superficialius

Answer 8

Median n

Question 9

where can the median nerve be impinged prox in the ant forearm

Answer 9

bw humeral and ulnar head of pronator teres

Question 10

path of ulnar n

Answer 10

post to med epicondyle and enter aponeurotic arch btw two heads of FCU (common for impingment)

• then emerges lat to FCU
• goes med to pisiform and spliys to deep and superficial ulnar n

Question 11

before median nerve travels in carpal tunnel what brach does it send over it to the palm

Answer 11

palmar branch

Question 12

the radial artery is lat to what tendon

Answer 12

flexor carpi radialis tendon

Question 13

contents of carpal tunnel med to lat

Answer 13

FDS, FDP, Median n, fPL

Question 14

is the ulnar n med or lat to ulnar artery

Answer 14

med

Question 15

where do u take the pulse from the radial artery

Answer 15

medial to termination of the brachioradialis muscle

Question 16

before entering the carpal tunnel the median n will send this branch

Answer 16

palmar cutaneous branch to supply the skin of palm of the hand

Question 17

if the median n is compressed in carpal tunnel would skin be affected

Answer 17

no

Question 18

what does the palmar cutnatous branch of median n supply

Answer 18

supply skin over prox 3/4 central palm as far as 4th metacarpal

Question 19

med to lat- things on outside of carpal tunnel- palmar surface

Answer 19

ulnar n, ulnar a, palmaris longus, superficial palmar br of radial a

Question 20

what is a variation of the brachial artery

Answer 20

high division in arm pit area

Question 21

where does strunthers lig run from and what can it compress

Answer 21

surpracondylar process and med epicondyle

median n

Question 22

where does the arcade of strunthers run and what can it compress

Answer 22

med head of tri to med intramuscular septim

Ulnar n

Question 23

5 sites of entrapment of ulnar n

Answer 23

1. Mid arm (as it perforates fascia)
2. Post arm (arcade of strunthers)
3. Post to med epicondyl
4. Flexor carpi ulnaris
5. Ulnar gunyons canal

Question 24

5 sites of entrapment of median n

Answer 24

1. strunthers lig
2. bicipital apponeurosis
3. bw 2 heads of pronator teres
4. passing under FDS
5. carpal tunnel

Question 25

Sensory and motor deficiencies in Ulnar n compression by FCU

Answer 25

sensory- paresthesis in palmar and dorsal 4/5th digits

Motor- weakend flex, adduction of wrist, difficulty making fist

Question 26

sensory and motor deficiencies in ulnar n compression by guyons canal

Answer 26

sensory- only superficial ulnar n affected distal 4/5 digits

motor- claw hand- atrophy from no supply of deep ulnar

Question 27

pronator syndrome- what n is affected and how do u provocative it

Answer 27

median n

-pronating hand

Question 28

motor deficits of pronator syndrome(3)

Answer 28

• flex of distal interphalangeal jts lost
• flex of metocarpopharangeal jts is affected
• thenal muscles fucntion lost

Question 29

Anterior interosseus n palsy motor ddeficit

Answer 29

wont be able to make Okay sign (absense of flex of interpharangeal jt)