Part 6

Question 1

triquetral fracture

Answer 1

usually an avulsion from the dorsal surface at the site of attachment of the radiotriquetral and ulnotriquetral ligament

Question 2

which view are triquetral fractures easiest seen?

Answer 2

lateral

Question 3

what is the second most common carpal fracture?

Answer 3

triquetral

Question 4

third most common fracture of the carpals?

Answer 4

hamate

Question 5

what part of the hamate is usually fractured?

Answer 5

hook of hamate

Question 6

how does a hamate get fractured?

Answer 6

direct blow to the hypothenar eminence or sports holding onto clubs, bats, rackets, etc

Question 7

best view to see a hamate fracture/

Answer 7

PA wrist

Question 8

most common carpal dislocation

Answer 8

perilunate dislocation

Question 9

what is the 3 “C” sign?

Answer 9

arc1: proximal margin of the proximal bones of the wrist
arc2: distal margin of the proximal carpal row
arc3: proximal capitate and hamate

Question 10

perilunate dislocation

Answer 10

occurs when lunate maintains normal position with respect to the distal radius while all other carapl bones are dislocated posteriorly

Question 11

lunate dislocation

Answer 11

volar dislocation and forward rotation of the lunate

capitate drops into space vacated by lunate

Question 12

what sign is associated with the lunate dislocation?

Answer 12

pie sign

Question 13

rotatory subluxation of the scaphoid

Answer 13

most common of the carpal instability patterns (scapho-lunate instability)

Question 14

radiographic signs of a rotatory subluxation of the scaphoid

Answer 14

widening of scaphoid lunate articulation with foreshortened appearance (terry thomas sign)
ring sign

Question 15

boxer’s fracture

Answer 15

fracture of the neck of the 5th or sometimes 4th metacarpal

Question 16

what does a boxer’s fracture result from?

Answer 16

direct blow with the fist

Question 17

radiographic sign of the boxer’s fracture

Answer 17

distal fragment of the metacarpal is angled volarly

visible on all views of the hand

Question 18

baseball/mallet finger

Answer 18

an avulsion of the extensor tendon at tis insertion of the dorsal surface of the base of the distal phalynx

Question 19

baseball/mallet finger results from?

Answer 19

blow to the end of the finger causing hyperflexion to a forcibly extended finger

Question 20

what type of injury is a baseball/mallet finger?

Answer 20

hyperflexion

Question 21

intra-articular injuries to the thumb

Answer 21

bennett’s

rolando’s

Question 22

extra-articular injuries to the thumb

Answer 22

transverse
oblique
epiphyseal separation

Question 23

where does the first metacarpal usually get injured?

Answer 23

proximal portion

Question 24

how does one get a fracture of the first metacarpal?

Answer 24

fall or direct blow along the longitudinal axis

hyperabduction or hyperextension

Question 25

bennett’s fracture

Answer 25

most common injury to metacarpal 1
fracture extends into the joint
displacement is caused by the abductor pollicis longus muscle

Question 26

describe, radiographically, a bennett’s fracture

Answer 26

oblique fracture of the base of the first metacarpal associated with dorsal subluxation of the first metacarpal

Question 27

describe, radiographically, gamekeeper’s thumb

Answer 27

partial or complete disruption of the ulnar collateral ligament of the 1st MCP articulation

Question 28

what type of injury is gamekeeper’s thumb?

Answer 28

valgus

Question 29

gamekeeper’s thumb

Answer 29

may have a small avulsion fragment typically at the base of the proximal phalynx
stress views needed

Question 30

dislocations of the hand

Answer 30

dorsal, lateral or volar
result from rotatory twisting forces
can be simple or complex
most often single joint involvement
reduciton most commonly closed