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CORE: MSK > Foot and Ankle > Flashcards

Foot and Ankle Flashcards

1
Q

5th metatarsal fractures?

A

shaft: diaphyseal
metadiaphyseal fracture: Jones
avulsion: peroneal brevis

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2
Q

Treatment for 5th metatasral base avulsion?

A

conservative, boot

peroneus brevis and plantar aponeurosis attachment

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3
Q

treatment for metaphyeal/diaphyeal junction fracture

A

variable; surgery

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4
Q

Freiberg infraction?

A

avascular necrosis of the second metatarsal head; stress from high heels/young women

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5
Q

sesamoid fracture mechanism of injury?

A

great toe sesamoid bone fracture from hyperextension/dorsal dislocation of the first MTP joint

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6
Q

what attaches to sesamoid bones?

A

flexor hallucis brevis (tibial/fibular heads attach to medial/lateral sesamoid)

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7
Q

turf toe injury?

A

MTP injury

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8
Q

Lisfranc joint?

A

interosseous ligament complex attached to medial cuneiform at second metatarsal

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9
Q

most sensitive study for Lisfranc issues?

A

weightbearing

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10
Q

Kohler disease? Mueller Weiss?

A

osteonecrosis of the navicular bone; more common in boys and adult women

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11
Q

Classification of Lisfranc injuries

A

homolateral or divergent

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12
Q

Chopart fracture dislocation? mechanism?

A

talonavicular/calcaneocuboid joint; high impact trauma

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13
Q

Classification system for talar neck fractures?

A

Hawkins

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14
Q

Classification system for calcaneal fractures?

A

Essex Lopresti and Sanders (CT)

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15
Q

Most frequently fractured tarsal bone?

A

calcaneus

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16
Q

associated injuries with calcaneus fractures?

A

lumbar spine fractures, traumatic aortic rupture, renal vascular pedicle avulsions

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17
Q

findings diagnositc of calcaneal fractures?

A

Boehler angle <20

18
Q

Essex lopresti classification

A

sparing subtalar joint or extending into subtalar joint

19
Q

Sanders classification system

A

number of comminuted fragments on coronal CT

20
Q

calcaneal stress fracture findings?

A

fluffy band of sclerosis; intact cortex

21
Q

Hawkins sign in talus?

A

subchondral lucent band on frontal ankle radiograph after immobilzation; bone resorption from hyperemia ; good prognosis

22
Q

Talar fracture types

A

lateral process, posterior process, head, body, neck fractures

23
Q

talar osteochondral lesions

A

osteochondrosis dessicans from chronic repetitive trauma

acute traumatic osteochondral fracture

24
Q

MRI appearance of osteochondral lesions of the talus

A

crescentic lucnecy of talar dome

25
Q

tarsal coalition?

A

fibrous, cartilaginous, osseous; talocalcaneal or calcaneonavicular ; common in adolescence and then ossify

26
Q

C sign on lateral radiograph foot

A

C shaped contour of fused middle subtalar facet with sustentaculum tail; not sensitive for talocalcaneal coalition

27
Q

talar beak sign?

A

triangular shaped beaking at anteriosuperior aspect of talus

28
Q

anteater sign

A

elongated process of calcaneus which looks like anteaters nose; fusion of calcaneus and navicular

29
Q

tom, dick, harry?

A

anterior extensor tendons, medial to lateral

tibialis anterior
extensor hallicus longus
extensor digitorum longus

also runs with anterior tibial artery

30
Q

Danis Weber classification

A

level of fibular fracture; syndesmotic injury

31
Q

Weber A

A

distal fibular fracture with intact syndesmosis

32
Q

Weber B

A

proximal transsyndesmotic fracture, partial syndesmotic rupture

33
Q

Weber C

A

high fibular fracture above syndesmosis; total rupture and ankle mortise instability

34
Q

Lauge Hansen classification system. Weber A-C?

A

A: supination/adduction
B: supination/external rotation
C: pronation/external rotation

35
Q

Tillaux fracture?

A

peds; Salter III of lateral tibial epiphysis

36
Q

Triplane/Marmor Lynn

A

fracture through tibia involving vertical epiphyseal, horizontal physeal, oblique metaphyseal

37
Q

Waggstaff-Lefort fracture

A

avulsion of anterior distal fibula at site of insertion of the anterior tibiofibular ligament

38
Q

Maisonneuve fracture

A

proximal fibular fracture with interosseous membrane tear or medial malleolar fracture

39
Q

Pilon fracture

A

comminuted fracture of distal tibia with disruption of tibial plafond; caused by axial loading

40
Q

boundaries of kager fat pad?

A

FHL, calcaneus, and achilles tendon

41
Q

achilles tendinosis on XR?

A

thickening of tendon; may also represent xanthomas in hyperlipidemic patients

42
Q

Ddx for increased soft tissue in kagers fat pad?

A

achilles tendon injury, accessory soleus, Haglund disease (pump bumps)

CORE: MSK (13 decks)

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