Fig. 1

Radiographic images of achondroplasia in the newborn period. A Generalized platyspondyly leading to an increased height of the intervertebral spaces. The pelvis shows a squared configuration with a horizontalized acetabular roof and narrowness of the sciatic notch. Pubis and mainly ischia are broad. The long tubular bones are shorter with metaphyseal irregularity and the fibulae are greater than tibia. Note the oval-shaped lucent appearance of the proximal femora. B In the lateral view, it is also evident an increased lumbar lordosis. C The cranium is large and both frontal and occipital regions are prominent. D The hand show shortening of all tubular bones – metacarpal and phalanges