Part 9

Question 1

ankle joint

Answer 1

a ring or circle made up of the tibia, fibula and talus and their ligamentous attachments

Question 2

Neer’s ring analogy

Answer 2

a single break of the ankle joint is stable

a break in two positions is unstable

Question 3

what is the most common break combination in the ankle joint?

Answer 3

bi-malleolar fracture

Question 4

transverse malleolar fracture is made by?

Answer 4

inversion injury of the lateral ligament complex

Question 5

trimalleolar fracture of the ankle is associated with?

Answer 5

eversion injury with a transverse fracture medial malleolus

Question 6

stress views of the anke are done when?

Answer 6

there is clinical evidence of instability

no radiographic evidence of fracture

Question 7

what are radiographic features of stress gractures?

Answer 7

> 16 degrees of talar dome angluation
assymetrical lateral mortise spacing
3mm anterior translation on anterior draw stress

Question 8

what is the most commonly fractured tarsus?

Answer 8

calcaneus

Question 9

what results in calcaneal fractures?

Answer 9

compressive force from falls

Question 10

what radiographic line can be utilized to determine a calcaneal fracture?

Answer 10

boehler’s angle

Question 11

boehler’s angle

Answer 11

line one goes from superior posterior margin of the tuberosity to the superior tip of the posterior facet
line two goes from the superior margin of the anterior process to the superior tip of the posterior facet

Question 12

boehler’s angle shoud be?

Answer 12

no less than 28 degrees

Question 13

second most common tarsal that is fractured

Answer 13

talus

Question 14

talus fractures are?

Answer 14

avulsion or vertical fractures

Question 15

jones/dancer’s fracture

Answer 15

a transverse fracture at the base of the 5th metatarsal that also is an avulsive injury from the peroneus brevis tendon

Question 16

how does a jones/dancer’s fracture happen?

Answer 16

plantar flexion and inversion of the foot

Question 17

where is the pain commonly located for a jones/dancer’s fracture?

Answer 17

ankle pain, may misdirect your attension away from the base of the 5th metatarsal

Question 18

stress fractures of the feet most commonly involve?

Answer 18

middle second and third metatarsal shafts

Question 19

radiographic evidence of stress fractures of the feet.

Answer 19

initially absent

Question 20

what happens 7-10 days after a suspected stress fracture is xrayed again?

Answer 20

fluffy periosteal reaction appears at the site

Question 21

early recognition of a stress fracture can be done with?

Answer 21

bone scan

Question 22

types of dislocations of the feet

Answer 22

talus
chopart/midtarsal
lisfranc/tarsometatarsal

Question 23

lisfranc dislocation

Answer 23

dorsal tarsometatarsal dislocation

Question 24

lisfranc dislocations result from?

Answer 24

fall from a height

diabetes

Question 25

chopart’s dislocation

Answer 25

medial midtarsal dislocation (rare injury)

Question 26

chopart’s dislocation is often associated with?

Answer 26

fractures of the apposing margins of the foot