Which radiographic views should be obtained if a patellar fracture is suspected?

Which radiographic views should be obtained if a patellar fracture is suspected?

• A. AP only
• B. AP, Lateral, Sunrise
• C. Sunrise only
• D. AP, Lateral

Answer: (B)

When a patellar fracture is suspected, you need multiple radiographic views to visualize the patella in relation to the femur and to assess the articular surface, displacement, and fracture pattern. The sunrise (tangential) view focuses on the patellofemoral joint and the patella itself, making nondisplaced fractures and fractures along the articular margin much easier to detect than with standard AP or lateral views alone. The AP view provides overall knee alignment and helps see the patella in context, but it often shadows fracture lines due to overlapping structures. The lateral view shows sagittal displacement and how the fragments move relative to each other, offering information about displacement and patellar tilt. While helpful, neither AP nor lateral alone reliably reveals all fractures, especially small or marginal ones. Combining AP, lateral, and sunrise gives a comprehensive assessment: you see the patella’s position and fracture on the AP view, evaluate displacement and alignment on the lateral view, and visualize the articular surface and any subtle fracture lines on the sunrise view. This is why the three-view set is preferred for suspected patellar fracture.

When a patellar fracture is suspected, you need multiple radiographic views to visualize the patella in relation to the femur and to assess the articular surface, displacement, and fracture pattern. The sunrise (tangential) view focuses on the patellofemoral joint and the patella itself, making nondisplaced fractures and fractures along the articular margin much easier to detect than with standard AP or lateral views alone.

The AP view provides overall knee alignment and helps see the patella in context, but it often shadows fracture lines due to overlapping structures. The lateral view shows sagittal displacement and how the fragments move relative to each other, offering information about displacement and patellar tilt. While helpful, neither AP nor lateral alone reliably reveals all fractures, especially small or marginal ones.

Combining AP, lateral, and sunrise gives a comprehensive assessment: you see the patella’s position and fracture on the AP view, evaluate displacement and alignment on the lateral view, and visualize the articular surface and any subtle fracture lines on the sunrise view. This is why the three-view set is preferred for suspected patellar fracture.