1. check vertebral abnormalities
2. Bone density normal
3. Lethal dysplasia
4. Infantogram

Thumbnail	Name
Unavailable	Short ribs, narrow thorax, polydactyly, trident pelvis
Unavailable	Bowing of femora (telephone handle femora), short rib, narrow thorax, wafer thin vertebral bodies
Unavailable	Clover-leaf skull, narrow thorax, short ribs, femur may be normal