Knee Injury Flashcards Preview

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Flashcards in Knee Injury Deck (19):
1

Which meniscus in the knee is more fixed and less mobile - medial or lateral?

Medial

2

Which ligament resists valgus stress?

Medial cruciate ligament

3

Which ligament resists varus stress?

Lateral cruciate ligament

4

What does the anterior cruciate ligament prevent?

Subluxation of tibia anteriorly

5

What does the posterior cruciate ligament prevent?

Subluxation of tibia posteriorly
Hyperextension of knee

6

A patient who has difficulty descending stairs may have rupture of which ligament in the knee?

Posterior cruciate ligament

7

Which meniscal tear - medial or lateral - is more common?

Medial (undergoes more stress)

8

Meniscal tears heal easily. True/False?

False
Very limited healing potential (poor blood supply)

9

What is a "bucket handle tear", how does it present and how is it treated?

Meniscus flap gets caught in intercondylar notch
Presents as locked knee
Arthroscopic repair/menisectomy

10

Meniscal tear due to degenerative damage is pointless to operate on. True/False?

True
Little improvement, sometimes worse

11

Describe grade 1 knee ligament tear

Tear of some ligament fibres but macroscopically everything is in tact (sprain)

12

Describe grade 2 knee ligament tear

Partial tear where some fascicles are disrupted

13

Describe grade 3 knee ligament tear

Complete tear of the ligament

14

ACL rupture repair never really works - what is done instead?

Reconstruction (allograft, autograft or synthetic graft)

15

If a patient suddenly twists, which ligaments are susceptible to tear?

ACL
Meniscus

16

Only full thickness cartilage injury can heal. True/False?

True

17

What is osteoarthritis dissecans?

An area of the surface of the knee loses its blood supply and cartilage, sometimes causing bone to fragment off

18

When hyaline cartilage heals, what type of cartilage replaces it?

Fibrocartilage

19

List some cartilage regeneration techniques

Microfracture
Grafting
Mosaicplasty
MACI (membrane-induced autologous chondrocyte implantation)