Acetabulum Study

AP Oblique Projection

1. Patient in supine position;
2. Elevation from the affected side about 45º (situation A) or approximation the affected side and elevation the other side 45º (situation B).

Central ray perpendicular to the middle, between Anterior Superior Iliac Spine (ASIS) and pubic symphysis, of the affected side.

Respiration: Suspended.

Situation A:

• Obturator foramen opened;
• Iliac crest almost in profile;
• Acetabulum in the center of the image;
• Appropriate exposure values (visualization of the all bony trabeculation and soft tissue).

Situation B:

• Iliac crest unfolded;
• Obturator foramen in oblique position;
• Acetabulum in the center of the image;
• Appropriate exposure values (visualization of the all bony trabeculation and soft tissue).