What is the angle of tube tilt when performing an AP HIP X-ray?

The angle of tube tilt for an AP HIP X-ray is typically negligible. In this positioning, the X-ray beam is directed perpendicularly to the film or receptor to achieve a clear image of the hip joint and surrounding structures. A negligible tilt ensures that the anatomy is accurately represented without distortion, allowing for proper evaluation of fractures, degenerative changes, or other pathologies.

Considering the angles of tilt mentioned in the other choices, upward or downward tilts may be applied in other views or specific clinical scenarios but are not appropriate for the standard AP view. In the AP positioning, precise alignment with the anatomical structures is crucial, and this is best accomplished without additional angles that could lead to misinterpretation or inadequate imaging.