Knee (Beclere method intercondylar view)
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The Béclere method intercondylar view is an additional projection of the knee, used to better examine the tibial plateau and femoral intercondylar spaces 1. It is anecdotally known as a 'notch view'.
The commonest indications for this additional knee view is for the assessment of a loose body (locked knee) and better delineation of the intercondylar eminence.
- the patient is supine on the table with the knee flexed 40 degrees 1
- the image receptor is placed under the flexed knee slightly more superior than that of the AP projection
- axial projection
- central ray is angled to align perpendicular to the tibia central to 1.5 cm distal of the apex of the patella
- superior to include the distal femur
- inferior to include the proximal tibia/fibula
- lateral to include the skin margin
- medial to include medial skin margin
- 24 cm x 30 cm
- 60-70 kVp
- 7-10 mAs
- 100 cm
Image technical evaluation
- tibial plateau should be free from any superimposition
- femoral condyles should be free from superimposition with the intercondylar fossa in profile, giving the appearance of a 'notch'
- ensure before carrying out x-ray the image receptor is superior enough to contain the image