What other features are associated with this condition?
Wormian bones, supernumerary teeth, hemivertebrae, brachycephaly, absent/hypoplastic fibula/radius, coxa vara.
The clavicles are markedly hypoplastic, lacking lateral ends. The rib cage is narrow superiorly with an overall bell-shaped configuration. The scapulae are high, hypoplastic and externally rotated.