How many degrees should the head be rotated toward the affected side for the oblique inferiosuperior projection?

• A. 10°
• B. 15°
• C. 20°
• D. 30°

Answer: (B)

For the oblique inferiosuperior projection, a 15-degree rotation of the head toward the affected side is ideal. This degree of rotation is necessary to adequately visualize the anatomical structures of the area in question, such as the glenoid cavity and the humeral head, while minimizing superimposition from surrounding structures.

A 15-degree angle provides an optimal view to highlight the important features required for diagnosis. This specific angle allows the x-ray beam to project effectively, aligning it with the structures of interest and helping in obtaining a clear radiographic image. Understanding the proper positioning technique is crucial in radiography, as it directly impacts the quality of the diagnostic images captured, which is essential for accurate assessment and treatment planning.