Recommended Articles. Injury to SUPERIOR GLUTEAL NV bundle. 1 April 2006 | Radiology, Vol. Special radiographic signs to look for include the Gull Sign (lateral spike protruding from acetabulum) which signifies a posterior wall fracture and the Spur Sign (lateral continuation of the ilium that is seen as a spike above the acetabulum on an obturator view) which signifies an associated both column fracture. Comments Regarding the Spur Sign. inlet iliac oblique view acetabular fx. Subtle anterior subluxation can be seen on the obturator oblique view, and subtle posterior subluxation can be seen on the iliac oblique view (medialization of the femoral head with respect to the dome of the acetabulum). represents impaction of superomedial roof; seen on obturator oblique view; pathognomic for posterior wall fractures; spur sign ... • "gull sign" on obturator oblique view. Radiology 2006. Obturator oblique view is obtained on a supined patient with the injuried side of pelvis rotated anteriorly at 45°. 299-300. defined as > 45° on AP, obturator and iliac oblique views; not applicable for associated both column or posterior wall pattern because no intact portion of the acetabulum to measure; gull sign. ... What to look for in the OBTURATOR OBLIQUE view? What other injury to look for on a POSTERIOR COLUMN fx? 239, No. see profile of the OBTURATOR FORAMEN Look at ANTERIOR COLUMN (iliopectineal line) and POSTERIOR WALL. Posterior wall fracture X-ray AP acetabular fx. best view to rule out joint penetration. Digital Posters 2016. This sign is most clearly seen on the obturator oblique view and is pathognomonic for an associated both column (ABC) fracture. Comments Regarding the Spur Sign. What the Orthopod Wants to Know about Acetabular Fractures. The x-ray beam is directed vertically toward the affected hip. The ‘spur’ of bone represents the sharp edge of the ilium remaining as the ‘constant fragment’ with the remainder of the entire acetabulum displaced medially. obturator oblique view flouro acetabular fx. 1. Posterior wall fracture X-ray - obturator obique acetabular fx. Volume: 239 Issue: 1 pp. POSTERIOR WALL: See as GULL SIGN on OBTURATOR OBLIQUE view. What's the Crack?