The Knee

Question 1

Why is the knee so frequently injured?

Answer 1

Great stability and mobility, as well as compromised location between the two longest bones in the body

Question 2

What 3 pathologies are visualized by radiographs?

Answer 2

1. Fractures
2. Dislocations
3. Arthritis

Question 3

What 4 pathologies are visualized by CT scans?

Answer 3

a. Image of choice when structural or spatial information about the bones and joint articulation is needed

1. Complex fractures
2. Tibial plateaus fracture depression
3. Articular defects
4. Fragmentation

Question 4

What is the primary indication for using MRI at the knee?

Answer 4

Assessment of internal structures including articular cartilage, ligaments, tendons, and menisci

Question 5

What 3 pathologies are visualized by MRI scans?

Answer 5

1. Injuries to ligaments, menisci, articular cartilage
2. Osteochondral fractures
3. Osteochondritis dissecans

Question 6

What is considered the first line examination at the knee?

Answer 6

Ultrasound conjunction to radiography (x-ray)

Question 7

What are 3 primary pathologies visualized by US at the knee?

Answer 7

1. Extensor mechanism
2. Joint effusion
3. Popliteal cyst

Question 8

What 4 views/projections make up the routine radiologic examination of the knee?

Answer 8

1. Anterior posterior
2. Lateral
3. Intercondylar fossa (tunnel) view
4. Tangential patellofemoral (sunrise) view