Fractures of tarsals and metatarsals Flashcards Preview

MSK > Fractures of tarsals and metatarsals > Flashcards

Flashcards in Fractures of tarsals and metatarsals Deck (13):
1

Cause of talar neck fracture

Excessive dorsiflexion of foot
The neck of talus is pushed against the tibia

2

Risk of talar neck fracture

Blood supply to talus may be disturbed leading to avascular necrosis

3

Cause of talar body fractures

Jumping from a height

4

Displacement of fragments in fractures of talus

Little displacement
Malleoli hold fragments together

5

Common cause of calcaneus fracture

Falling onto heel from great height

6

What's the usual mechanism of calcaneus fracture

Talus is forced into calcaneus
Calcaneus suffers a comminuted fracture (breaks into several pieces)

7

Appearance of calcaneus fracture X-ray

Calcaneus appears shorter and wider

8

Complications of calcaneus fracture after treatment

Sub-talar joint may become arthritic
Pain on inversion and eversion

9

Mechanisms of metatarsal fractures

Direct blow (most common) like dropping heavy object on foot
Repeated stress to bone (common in athletes)
Excessive inversion

10

What does repeated stress on metatarsals cause

Stress fracture (incomplete fracture)

11

Which metatarsals do stress fractures most commonly occur to

2-4

12

Complication of metatarsal fracture by excessive inversion

Fibularis brevis muscle can avulse (tear off) base of metacarpal 5

13

What are the sites of talar fractures

Neck
Body

Decks in MSK Class (87):