Knee Flashcards
What are the 4 standard views of the knee?
- AP
- Lateral
- Sunrise
- Tunnel
What 5 things does the AP view demonstrate?
- varus-valgus alignment
- mineralization of bones
- medial and lateral alignment of patella relative to femur
- osteophyte formation
- maintenance of joint space by meniscal cartilage within knee
The more evident the trabeculae, the ____ the mineralization in the matrix of the bone
less
What two articulations can you see in the lateral view of the knee?
femorotibial articulation and patellofemoral articulation
In normal alignment of the knee does the femur have a slight valgus or varus alignment?
valgus
The sunrise view is used to visualize what?
The patella in the groove between the femoral condyles
The tunnel view is used to view what?
The intercondylar notch between the femoral condyles
A calcification in the intercondylar notch indicates what type of injury?
Typically a cruciate ligament injury
How is the patient positioned and at what angle is the beam directed in the AP view?
Patient supine with the beam angled about 6° cephalad
How is the patient positioned and at what angle is the beam directed in the lateral view?
Patient side-lying with the knee flexed 20°- 35° and the beam is angled about 5° cephalad
How is the patient positioned and at what angle is the beam directed in the sunrise view?
Patient prone with the knee flexed about 115° with the beam angled 15° cephalad towards the anterior surface of the knee
How is the patient positioned and at what angle is the beam directed in the tunnel view?
Patient prone with the knee flexed about 40°-50° with the beam angled 40° caudal towards the posterior surface of the knee
If there is trauma to the knee which view should you use?
The tunnel view to help visualize the intercondylar notch (cruciate ligament location)
