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Flashcards in Hand Deck (33):
1

bones in the hand

-5 metacaprels
-5 prox phalanx
-4 mid phalanx
-5 dist phalanx

2

jnts in the hand

-MP: metacarpel phalangeal (knuckle)
-PIP: prox interphalangeal
-DIP: distal interphalangeal
-IP: interphalangeal (thumb)

3

movement of fingers

-flex/exten
-abduct/adduct (mid finger wont move)

4

what lig connects heads of metacarpels?

transverse metacarpel lig

5

what lig stabilizes IP jnts laterally?

collateral lig

6

what lig covers palmar side of IP anf MP jnt?

volar plate
-stop over hyper extension

7

what are the ligs of thumb

radial and ulnar collateral lig
radial: lat side of MP jnt
ulnar: med side of MP jnt

8

mechanism of injuring radial/ulnar collateral lig of thumb

-jammed/hyperextension

9

what is the thenar eminence composed of

-abductor pollicus brevis
-opponens pollicus
-flexor pollicus brevis

10

where is the hypothenar eminence?

prox to 5th digit
-extends to pisiform

11

the hypothenar eminence is composed of...

-abduct digit quinti
-opponen digiti quinti
-flexor digiti quinti

12

borders of the snuff box

radial side:
-abductor pollicus longus
-abductor pollicus brevis
ulnar side: extensor brevis longus

13

flexor digitorum superficialis
-what does it flex?

-splits at mid pnt of prox phalanx
-attaches to lat crest of each mid phalanx
-flexes PIP

14

flexor digitorum profundus
-what does it flex?

-runs along length of finger and inserts into base of distal phalanx
-flexes the DIP

15

two parts of extensor digitorm

med band and two lat bands

16

med band of extensor digitorum
-what does it extend

-inserts on mid phalanx
-extends PIP

17

two lat bands of extensor digitorum

-split at prox phalanx
-reunite at middle phalanx
insert into DIP
extends DIP

18

mechanism of a fracture

-direct blow to top of finger

19

where is a sprain in the finger the most common

PIP jnt

20

mechanism of game keepers thumb

forceful abduct of prox phalanx sometimes w/ hyper extension

21

what ligament is injured in game keepers thumb?

-avulsion of capsule and ulnar collat ligament

22

waht tendon is involved in boutonnieres deformity

-extensor digitorum med band

23

where does the deformity occur in bout deform

-PIP jnt = cant extend
-will be stuck in flex

24

mechanism of mallet finger

blow to tip of finger
-excessive flexion of hyperextension of DIP

25

what tendon is involved in mallet finger

-extensor digitorum lat band

26

mechanism of jersey finger

grabbing jersey = flexors in tight contraction
opponent pulling away = forced extension

27

what tendon is involved in jersey finger

flexor digitorum profundus

28

sign of jersey finger

can not flex DIP jnt
-surgical repair

29

mechanism of handle bar palsy

repeated irritation to deep branch of ulnar nerve

30

signs and symptoms of handle bar palsy

-numbness/tingling
-inability to grip

31

what is suburgal hematoma

-accumulation of blood under nail

32

mechanism of suburgal hematoma

trauma to nail

33

treatment for suburgal hematoma

-ice to prevent formation
-post formation: drill hole in nail to release blood and pressure