Which projection is used to visualize the intercondylar fossa by directing the beam from superior to inferior with the knee flexed?

• A. Settegast
• B. Beclare
• C. Merchant
• D. Holmblad

Answer: (D)

To see the intercondylar fossa clearly, you want an axial projection taken with the knee flexed so the beam travels along the long axis of the leg from top to bottom. The Holmblad method does exactly this: the knee is flexed (often around 60–70 degrees) and the X-ray beam is directed from superior to inferior, perpendicular to the tibia. This orientation reduces overlap from the femoral condyles and opens up the intercondylar notch, giving a clear view of the intercondylar fossa.

Other common knee views target different structures. Settegast and Merchant are more focused on the patellofemoral joint and patella, using tangential or alternative flexion angles. Beclere is another intercondylar-focused projection but uses a different angulation and beam direction, not the superior-to-inferior path described here. So the described setup—knee flexed with the beam directed superior to inferior—is characteristic of the Holmblad projection.