Hand

Question 1

bones in the hand

Answer 1

• 5 metacaprels
• 5 prox phalanx
• 4 mid phalanx
• 5 dist phalanx

Question 2

jnts in the hand

Answer 2

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

Question 3

movement of fingers

Answer 3

• flex/exten

- abduct/adduct (mid finger wont move)

Question 4

what lig connects heads of metacarpels?

Answer 4

transverse metacarpel lig

Question 5

what lig stabilizes IP jnts laterally?

Answer 5

collateral lig

Question 6

what lig covers palmar side of IP anf MP jnt?

Answer 6

volar plate

-stop over hyper extension

Question 7

what are the ligs of thumb

Answer 7

radial and ulnar collateral lig

radial: lat side of MP jnt
ulnar: med side of MP jnt

Question 8

mechanism of injuring radial/ulnar collateral lig of thumb

Answer 8

-jammed/hyperextension

Question 9

what is the thenar eminence composed of

Answer 9

• abductor pollicus brevis
• opponens pollicus
• flexor pollicus brevis

Question 10

where is the hypothenar eminence?

Answer 10

prox to 5th digit

-extends to pisiform

Question 11

the hypothenar eminence is composed of…

Answer 11

• abduct digit quinti
• opponen digiti quinti
• flexor digiti quinti

Question 12

borders of the snuff box

Answer 12

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

Question 13

flexor digitorum superficialis

-what does it flex?

Answer 13

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

Question 14

flexor digitorum profundus

-what does it flex?

Answer 14

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

Question 15

two parts of extensor digitorm

Answer 15

med band and two lat bands

Question 16

med band of extensor digitorum

-what does it extend

Answer 16

• inserts on mid phalanx

- extends PIP

Question 17

two lat bands of extensor digitorum

Answer 17

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

Question 18

mechanism of a fracture

Answer 18

-direct blow to top of finger

Question 19

where is a sprain in the finger the most common

Answer 19

PIP jnt

Question 20

mechanism of game keepers thumb

Answer 20

forceful abduct of prox phalanx sometimes w/ hyper extension

Question 21

what ligament is injured in game keepers thumb?

Answer 21

-avulsion of capsule and ulnar collat ligament

Question 22

waht tendon is involved in boutonnieres deformity

Answer 22

-extensor digitorum med band

Question 23

where does the deformity occur in bout deform

Answer 23

• PIP jnt = cant extend

- will be stuck in flex

Question 24

mechanism of mallet finger

Answer 24

blow to tip of finger

-excessive flexion of hyperextension of DIP

Question 25

what tendon is involved in mallet finger

Answer 25

-extensor digitorum lat band

Question 26

mechanism of jersey finger

Answer 26

grabbing jersey = flexors in tight contraction

opponent pulling away = forced extension

Question 27

what tendon is involved in jersey finger

Answer 27

flexor digitorum profundus

Question 28

sign of jersey finger

Answer 28

can not flex DIP jnt

-surgical repair

Question 29

mechanism of handle bar palsy

Answer 29

repeated irritation to deep branch of ulnar nerve

Question 30

signs and symptoms of handle bar palsy

Answer 30

• numbness/tingling

- inability to grip

Question 31

what is suburgal hematoma

Answer 31

-accumulation of blood under nail

Question 32

mechanism of suburgal hematoma

Answer 32

trauma to nail

Question 33

treatment for suburgal hematoma

Answer 33

• ice to prevent formation

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