Fractures of the knee

Question 1

MOI for patellar fx

Answer 1

Direct trauma

Question 2

Xray views for patellar fx

Answer 2

AP and lateral

Question 3

When to operate on a patellar fx

Answer 3

Operate if:
Extensor mechanism compromised
displaced fx or transverse (avulsion) fx
Osteochondroitin dissecans

Question 4

When to not operate on patellar fx

Answer 4

Closed fx
not displaced more than 3 mm
not transverse fx
extension preserved

Question 5

What is osteochondroitin dissecans

Answer 5

Break in articular cartilage which decreases blood supply to that area
Think about if normal healing doesn’t occur
Usually occurs in adolescents

Question 6

MOI for high fibular fx

Answer 6

Trauma

Question 7

Important to check with proximal head fibular fx

Answer 7

Distal neurologic deficits d/t common peroneal nerve injury

Question 8

What is a Maisonneuve fx

Answer 8

Severe ankle external rotation injury

Question 9

Types of Femoral fxs

Answer 9

supracondylar, condylar, or combination

Question 10

Reasons for tibial and femoral fxs in young versus old people

Answer 10

Young: high energy trauma (skiing)
Old: underlying osteoporosis

Question 11

What xrays to order for tibial and femoral fxs

Answer 11

AP and lateral