What is the required external rotation degree for a Frog-Leg Lateral X-ray?

The Frog-Leg Lateral X-ray position requires an external rotation of 15-20 degrees. This specific degree of rotation is essential for properly visualizing the hip joint and surrounding structures, allowing for clear assessment of any potential fractures, dislocations, or other pathologies. By achieving this degree of rotation, the femoral neck is placed in profile, optimizing the clarity and diagnostic quality of the images. This technique is commonly used in pediatric radiography for evaluating developmental dysplasia of the hip, as well as in adult imaging to assess hip joint conditions.

Achieving the specified external rotation helps to maintain patient comfort while ensuring optimal alignment for accurate radiographic results, which is crucial in producing useful diagnostic information.