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Imaging II > Knee > Flashcards

Flashcards in Knee Deck (17)
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1

Most common sports related injury:

meniscal tears

2

Isolated tears present with:

Intermittent clicking and eventually chronic blocking or locking of knee joint motion
Effusion
Pain

3

Radiographs should be ordered:

joint effusion after direct blow or fall
inability to walk without limping
palpable tenderness over patella or fibula
inability to flex knee to 90

4

Standard modality for evaluating menisci

MRI

5

Most common meniscal tear:

vertically oriented through the tissue

6

Bucket handle tear:

A longitudinal extension of vertical tear

7

Degenerative tears in older age groups usuall

horizontally oriented

8

Tears of collateral ligaments:

Patient presents after an acute episode with pain, joint effusion, and instability upon physical examination via ligamentous stress testing

9

LCL injured from

varus force

10

MCL injured from

valgus force

11

Whast are MCL tear often associated with?

tears of joint capsule and medial meniscus (to which it is firmly attached)

12

What will severe injuries also damage?

anterior cruciate ligament

13

MOI to PCL:

external forces that strike anterior aspect of knee, as in dashboard injuries

14

MOI to ACL:

non-contact forces that place great valgus and rotary stresses on knee

15

What image is best to demonstrate cruciates?

sagittal MRI

16

O’Donoghue’s terrible (or unhappy) triad:

MCL
ACL
medial meniscus

17

Most revealing study of choice for MCL:

T2 weighted MRI