Final answer:
The AP axial projection, or 'frog leg' position, is a radiographic technique used to assess fractures or abnormalities in the femoral neck.
Step-by-step explanation:
The AP axial projection, or 'frog leg' position, of the femoral neck places the patient in a supine position with the affected thigh abducted 40 degrees.
In this position, the X-ray beam is directed from the superior to inferior, focusing on the femoral neck. It is commonly used to assess fractures or abnormalities in the femoral neck, such as femoral head avascular necrosis or slipped capital femoral epiphysis.
This projection provides a clear view of the femoral neck and is especially useful in evaluating pediatric patients.