The frequency of this disorder is unknown, but it is very rare. Only a few families with the condition have been reported.
Otospondylomegaepiphyseal dysplasia
Spondylo-meta-epiphyseal dysplasia
Metaphyseal dysplasia
Craniometaphyseal dysplasia
Multiple epiphyseal dysplasia
Achondroplasia
Craniodiaphyseal dysplasia
Spondyloepimetaphyseal dysplasia