obturator foramina for symmetry-clue for rotation of film
diastasis of pubic symphysis and both SI joints
assymetry of illiac wings (rotation or deformity)
sacral foramina-especially the superior cortical margins
transverse processes of L5
integrity of all cortical lines, especially around acetabulum.
Pelvic x-ray interpretation
Core ultrasound findings
Physical exam documentation
Visual diagnosis 
X-ray interpretation 
EFAST exam
Pediatric assessment triangle
Pelvic ultrasound 