Which of the following statements is true about an optimal tangential knee projection (Merchant method)?
a. A patellar subluxation is demonstrated as long as the patellae are positioned di-rectly above the intercondylar sulcus.
b. The lateral femoral condyle demonstrates more height than the medial femoral condyle.
c. To demonstrate a patellar subluxation, the quadriceps femoris must be tightly contracted.
d. The central ray and axial view angulation, when added, should equal 100 degrees.
B
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