WEEK 4 WRIST AND HAND

Question 1

Lack of common creases in the palm can indicate?

Answer 1

Abnormalities

Question 2

Thenor=

Answer 2

Thumb

Question 3

Hypothenor=

Answer 3

Pinky

Question 4

What are the anatomic snuffbox boundaries?

Answer 4

extensor pollicis longus tendon, abductor pollicis longus tendon, extensor pollicis brevis tendon

Question 5

How do you get snuffbox?

Answer 5

Make a hitchhikers thumb

Question 6

What is found in anatomical snuffbox?

Answer 6

Radial artery, superficial branch of radial n, scaphoid bone, trapezium, 1st metacarpal

Question 7

What are the 4 bones that mark the corners of carpal tunnel?

Answer 7

Trapezium, scaphoid, pisiform, hook of hamate (transverse carpel ligament)

Question 8

What is the ligament spanning the carpal tunnel?

Answer 8

Transverse carpel ligament

Question 9

Should be able to feel the pisiform on what side of hand?

Answer 9

Palmer

Question 10

What is the protuberance you see on medial posterior side of wrist?

Answer 10

Head of ulna

Question 11

What wrist bone directly articulates with radius?

Answer 11

Scaphoid

Question 12

Why is the interosseous membrane important?

Answer 12

Because the radius is in direct contact with the wrist but the ulna is not. So this membrane prevents excess strain on radius by moving some of the force over to the ulna

Question 13

The bulk of the hand is innervated by?

Answer 13

Ulnar nerve

Question 14

Thenar compartment of hand is innervated by?

Answer 14

Recurrent branch of median nerve

Question 15

Adductor compartment of hand is innervated by?

Answer 15

Ulnar nerve

Question 16

Hypothenar compartment of hand is innervated by?

Answer 16

Ulnar nerve

Question 17

Central compartment of hand is innervated by?

Answer 17

Median and ulnar nerve

Question 18

Interosseous compartment of hand is innervated by?

Answer 18

Ulnar nerve

Question 19

What is the most distal phalanx joint?

Answer 19

DIP

Question 20

What is the middle phalanx joint?

Answer 20

PIP

Question 21

What is the more proximal phalanx joint (nearest wrist)?

Answer 21

MCP

Question 22

Why is the transverse carpal ligament important?

Answer 22

Anchors down all tendons, acts as a point of tension

Question 23

What does the transverse carpal ligament encase?

Answer 23

Carpal tunnel

Question 24

Tendon of palmaris longus is located?

Answer 24

Superficial the transverse carpal ligament on palmar side of hand (and then splits up between digits 2-5)

Question 25

Abduction of thumb?

Answer 25

Looks like a Crab… ABC= ABduction-Crab

Question 26

Are all hand muscles longus or brevis?

Answer 26

Brevis

Question 27

The ENTIRE thenar compartment is innervated by?

Answer 27

Recurrent branch of median nerve

Question 28

What are the two muscles innervated by ulnar nerve even though they act on thumb?

Answer 28

Adductor pollicis transverse hear (across) and adductor pollicis oblique head (diagonal)

Question 29

What muscle created the bulge on the pinky side of your hand when you make a fist?

Answer 29

Palmaris brevis

Question 30

Intero=

Answer 30

Between

Question 31

PAD is a way to remember?

Answer 31

Palmer adduct

Question 32

DAB is a way to remember?

Answer 32

Dab dorsal interossei abduct

Question 33

MEATLOAF is a way to remember?

Answer 33

Innervation! ME=median; L=Lumbricals 1&2; OAF=opponins, abductor, flexor (thenor compartment)

Question 34

HAIL is a way to remember?

Answer 34

Innervation of hypothenar compartment with Ulnar nerve. H=hypothenar muscle; A=adductor pollicis; I= interossei, L= lumbrical 3&4

Question 35

Lumbricals do what?

Answer 35

Flex MCP joint

Question 36

FDS does what?

Answer 36

Same as lumbricals, but ALSO flexes the middle phalanges (2-5) at PIP joint

Question 37

FDP

Answer 37

Same as FDS, but ALSO flex DIP joints (curling fingers into fist; FLEXES ALL JOINTS)

Question 38

Synovial Sheets

Answer 38

Is an additional tendon to act as a pulley to enclose OTHER tendons that act on a joint, reduce friction and are very fluid

Question 39

Synovial Cysts

Answer 39

Created when synovial sheets become inflamed

Question 40

Superficial palmar arch

Answer 40

Artery in palm, mainly with ulnar and some radial

Question 41

Deep palmar arch

Answer 41

Artery; mainly with radial artery but some ulnar

Question 42

Where are proper palmar digital arteries?

Answer 42

On either side of each phalange

Question 43

Recurrent branch of the median nerve?

Answer 43

Supplies innervation to the thumb (thenar compartment)

Question 44

Median nerve is inside or outside the carpal tunnel?

Answer 44

Inside (passes through carpal tunnel)

Question 45

Ulnar nerve is inside or outside the carpal tunnel?

Answer 45

Outside (passes OVER carpal tunnel)

Question 46

What is carpal tunnel syndrome?

Answer 46

Inflammation of synovial sheaths surrounding carpal tunnel

Question 47

What is affected by carpal tunnel syndrome?

Answer 47

Lateral 3.5 digits, NOT the palm (progressive weakness in thumb, atrophy)

Question 48

What nerve is affected with carpal tunnel syndrome?

Answer 48

Median nerve bc its inside carpal tunnel (does NOT affect ulnar nerve)

Question 49

When you extend your fingers, what are the tendons you see pop up on the back of your hand?

Answer 49

tendons of the extensor digitorum

Question 50

When you look at your palm, you see two large muscle buldgees (one under thumb, other under pinky), what are their surface anatomy names?

Answer 50

thenar eminance | hypothenar eminance

Question 51

Palmar aponeurosis

Answer 51

Tendonus covering of tendons on palmer side of hand