Pelvic x-ray interpretation

pubic symphysis: up to 5mm in width, up to 2mm offset, no overlap

SI joints: 2-4 mm in width

checklist-

1)obturator foramina for symmetry-clue for rotation of film

2)diastasis of pubic symphysis and both SI joints

3)assymetry of illiac wings (rotation or deformity)

4)sacral foramina-especially the superior cortical margins

5)transverse processes of L5

6)integrity of all cortical lines, especially around acetabulum.

Outlet views-sacral fxs, SI joint abnormalities

Inlet view-displacement of ant. Fragments into pelvis..

(posterior abnormalities usually need CT )