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14 Cards in this Set

  • Front
  • Back
State how to locate the knee joint for centering.
flex the joint slightly, locate the apex of the patella, and as the patient extends the knee, center their about ½ inch below the patellar apex.
State the importance of having the tube angled for both the AP and lateral projections.
It prevents the joint space from being obscured by the magnified image of the medial femoral condyle.
List the criteria for evaluating an AP knee radiograph.
-Open femorotibial joint space
-Slight superimposition of the fibular head if the tibia is normal.
State the correct amount of flexion of the knees when doing a lateral projection
20-30 degrees
State the correct amount of flexion of the knees when doing a lateral projection for a new or unhealed patellar fracture.
No more than 10 degrees
State how you would find the knee joint for a lateral projection.
Grasp the epicondyles and adjust the m so they are perpendicular to the IR.
Describe how you can tell a true lateral knee on a radiograph.
Femoral condyles superimposed
Open patellofemoral joint space
Explain why a standing AP projection of the knees would be of value.
It reveals the narrowing of a joint space that appears normal on the non-weight bearing study.
Describe the oblique projections of the knee that demonstrate the proximal tibiofibular articulation.
AP and PA medial oblique
Describe the two PA axial projections for the intercondylar fossa.
Hombland method
-camp-coventry method.
Describe the AP axial projection to demonstrate the intercondylar fossa.
Beclere method
List the methods that demonstrate the intercondylar fossa.
Describe the tangential projections that will place the patella in profile and open the patellofemoral articulation.
Hughston method, Merchant method, Settegast method
16) Name the projection of the patella that should not be attempted until a transverse fracture has been ruled out with a lateral projection.
Tangential projection (Sattegast method)