Which of the Following Statements Is True About an Optimal

Multiple Choice

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 directly 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.