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MSK 2 > Knee Fractures > Flashcards

Knee Fractures Flashcards

1
Q

What are the two most common types of knee fractures?

A

Patella

Tibial plateau

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2
Q

How frequent are knee fractures?

A

6% of knee injuries

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3
Q

How do we know if a knee injury needs a radiograph?

A

Age 55 or older

Isolated tenderness of patella

Tenderness over fibular head

Unable to flex knee > 90°

Unable to weight bear immediately

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4
Q

What is the Ottawa knee rule good at doing?

A

Ruling out a fracture

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5
Q

Pittsburgh knee rule

A

Blunt trauma associated with

Older than 50 or younger than 12

Inability to weight bear

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6
Q

What is a type 1 salter Harris epiphyseal fracture?

A

Fracture through physis

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7
Q

What is a type 2 salter Harris epiphyseal fracture?

A

Fracture partway through physis extending up into metaphysis

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8
Q

What is a type 3 salter Harris epiphyseal fracture?

A

Fracture partway through physis extending down into epiphysis

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9
Q

What is a type 4 salter Harris epiphyseal fracture?

A

Fracture through the metaphysis, physis, and epiphysis and can lead to angulation deformities when healing

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10
Q

What is a type 5 salter Harris epiphyseal fracture?

A

Crush injury to physis

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11
Q

What is often the mechanism of injury for a distal femur fracture?

A

MVA or fall

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12
Q

What is the prognosis for distal femur fracture?

A

Knee stiffness 1 year after injury

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13
Q

What is the most common type of patellar fracture?

A

Transverse (50-80%)

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14
Q

What is the most common mechanism of injury for the patellar fracture?

A

Direct blow to patella

Hyperextension

Contraction of quads

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15
Q

What are signs and symptoms of a patella knee fracture?

A

Pain

Swelling

Crepitus

Pain extending knee

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16
Q

What is the most helpful view to identify a patella fracture?

A

Sunrise view

17
Q

When can a patient partial weight bear after an open reduction internal fixation?

A

6-8 weeks

18
Q

What direction does the patella usually dislocate?

A

Laterally

19
Q

What is a complication that often happens with a patella dislocation?

A

Osteochondral fracture

20
Q

How are patella dislocations often managed?

A

Bracing

RICE

Taping

E stim

21
Q

What is often something that comes along with patella dislocations?

A

Recurrent dislocations and instability of knee

22
Q

What is the most common population for a tibial eminence fracture?

A

8-14 y/o

23
Q

What is the most common population for a tibial tubercle fracture?

A

Adolescents and females

24
Q

How long are tibial plateau fractures immobilized?

A

4-6 weeks

25
Q

When is open reduction internal fixation required for a tibial plateau fracture?

A

If it is > 3 mm

26
Q

What ligaments are associated with a segund fracture?

A

LCL and ACL

27
Q

What is the main concern with a knee dislocation?

A

Could be limb threatening

28
Q

What’s the most common type of knee dislocation?

A

Anterior

MSK 2 (21 decks)

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