Spondyloepiphyseal dysplasia, Reardon type is an extremely rare type of spondyloepiphyseal dysplasia described in several members of a single family to date and characterized by short stature, vertebral and femoral abnormalities, cervical instability and neurologic manifestations secondary to anomalies of the odontoid process. The disease is spondyloepiphyseal dysplasia, Reardon type (Monarch Disease Ontology term MONDO_0010902).