NCIt definition : A form of skeletal dysplasia characterized by shortening of the bones of the middle
segments of the limbs (i.e., the radii, ulnae, tibiae and fibulae).;
Alternative definition : NICHD: A form of skeletal dysplasia characterized by shortening of the bones of the
middle segments of the limbs (i.e. the radii, ulnae, tibiae and fibulae).;