Spondylocostal dysplasia is a rare genetic disorder characterized by defects of the bones of the spine (vertebrae) and abnormalities of the ribs. Ribs can be fused or missing in chaotic patterns. These malformations are present at birth (congenital). The disease is spondylocostal dysostosis (MONDO_0000359). Also known as: Spondylocostal Dysplasia, costovertebral dysplasia, spondylocostal dysplasia.