(1,3) Wrist & Hand Injuries

Question 1

What is the most common wrist fracture in geriatric patients?

Answer 1

Colles Fx

Question 2

What population is primarily affected by Colles fractures?

Answer 2

• F > M
• elderly, osteoporosis

Question 3

What is a Colles fracture?

Answer 3

fracture of distal radius with dorsal angulation of distal fragment (radial plateau)

Question 4

What is the term for the appearance of a Colles fracture?

Answer 4

dinner fork deformity
(dorsal angulation of distal fragment)

Question 5

What is the name for a reverse Colles fracture?

Answer 5

smith Fx

Question 6

What is the mechanism of a Smith fracture?

Answer 6

FOOSH with flexed hand

Question 7

What is a Smith fracture?

Answer 7

fracture of distal radius with anterior angulation of distal fragment (radial plateau)

Question 8

What is a Barton fracture?

Answer 8

Fx of posterior rim of distal radius

Question 9

What is another name for a Barton fracture?

Answer 9

rim Fx

Question 10

What are the 3 names for a fracture of the radial styloid process?

Answer 10

• chauffeur Fx
• backfire Fx
• Hutchinson Fx

Question 11

What is the most common carpal bone to fracture in adults?

Answer 11

scaphoid

Question 12

What is the most common occult fracture in the human body?

Answer 12

scaphoid Fx

Question 13

What is the mechanism of a scaphoid fracture?

Answer 13

FOOSH

Question 14

What part of the scaphoid is most likely to fracture?

Answer 14

neck/waist

Question 15

What is the best radiographic view for a scaphoid fracture?

Answer 15

PA wrist w/ ulnar deviation

Question 16

What are the possible complications of a scaphoid fracture?

Answer 16

• AVN
• non-union
• carpal instability (pseudoarthrosis)
• degeneration

Question 17

What is the term for an avulsion of the dorsal surface of the triquetrum?

Answer 17

fischer Fx

Question 18

What is the 2nd most common carpal to fracture?

Answer 18

triquetrum

Question 19

What is the mechanism of a Fischer fracture?

Answer 19

FOOSH + hyperflexion

Question 20

What is the best view for a Fischer fracture?

Answer 20

lateral

Question 21

What is the radiographic sign for a Fischer fracture?

Answer 21

pooping duck sign

Question 22

What are the possible mechanisms of a hook of hamate fracture?

Answer 22

• golfing or racquet sports
• stress Fx

Question 23

What is the best radiographic view for a hook of hamate fracture?

Answer 23

carpal tunnel view

Question 24

What is the most common carpal dislocation?

Answer 24

lunate

Question 25

What is the mechanism of a lunate dislocation?

Answer 25

FOOSH + hyperextension

Question 26

What was does the lunate displace when dislocated?

Answer 26

anteriorly (into carpal tunnel)

Question 27

What is the radiographic sign for a lunate dislocation?

Answer 27

pie sign

Question 28

What is the best radiographic view for a lunate dislocation?

Answer 28

PA

Question 29

What nerve is implicated in a lunate dislocation?

Answer 29

median n.

Question 30

What is the term for dorsal displacement of all carpals except the lunate, which stays in contact with the radius?

Answer 30

Perilunate dislocation

Question 31

What is another name for scapholunate dissociation?

Answer 31

rotary subluxation of the scaphoid

Question 32

What structure is damaged with scapholunate dissociation?

Answer 32

scapholunate lig

Question 33

What are the radiographic findings of scapholunate dissociation?

Answer 33

- Terry Thomas sign - Signet ring sign - DISI deformity

Question 34

What is the stability of scapholunate dissociation?

Answer 34

unstable

Question 35

What is the normal scapholunate angle?

Answer 35

30-60 deg

Question 36

What is Dorsal Intercalated Segmental Instability (DISI)?

Answer 36

dorsal angulation of lunate (scapholunate angle >60 deg)

Question 37

What is Volar Intercalated Segmental Instability (VISI)?

Answer 37

volar angulation of lunate (scapholunate angle <30 deg)

Question 38

What injury is DISI associated with?

Answer 38

scapholunate ligament (dissociation)

Question 39

What injury is VISI associated with?

Answer 39

lunotriquetral ligament

Question 40

What is the most common metacarpal fracture?

Answer 40

neck of 5th metacarpal

Question 41

What is the term for a fracture of the distal 2nd/3rd metacarpal?

Answer 41

boxer Fx

Question 42

What is the term for a fracture of the distal 4th/5th metacarpal?

Answer 42

bar room Fx

Question 43

What is Game Keeper thumb?

Answer 43

disruption of ulnar collateral ligament which may result in avulsion Fx at MCP jt of 1st digit

Question 44

What is another name for Gamekeeper thumb?

Answer 44

skier thumb

Question 45

What is the mechanism of Game keeper thumb?

Answer 45

hyperABduction of thumb

Question 46

What is a complication of Game keeper thumb?

Answer 46

Stener lesion (UCL becomes trapped btwn adductor pollicis and base of prox phalanx)

Question 47

What is the term for avulsion or impaction at the PIP in hyperextension?

Answer 47

volar plate Fx

Question 48

What is the term for an avulsion fracture of the dorsal corner of the base of the distal phalanx by extensor digitorum?

Answer 48

mallet Fx

Question 49

What is the mechanism of a mallet fracture?

Answer 49

forceful flexion of DIP

Question 50

What injury results in loss of DIP extension?

Answer 50

mallet Fx

Question 51

What is the term for avulsion of the flexor digitorum profundus?

Answer 51

jersey finger

Question 52

What is the mechanism of jersey finger?

Answer 52

forceful hyperextension of DIP

Question 53

What injury results in loss of DIP flexion?

Answer 53

jersey finger

Question 54

What is the most common direction of metacarpophalangeal and interphalangeal joint dislocations?

Answer 54

posterior

Question 55

What are the most common dislocated joints in the body?

Answer 55

- metacarpophalangeal - interphalangeal