MONDO_0015466 (cranio-osteoarthropathy) (COA) is a form of primary hypertrophic osteoarthropathy characterized by delayed closure of the cranial sutures and fontanels, digital clubbing, arthropathy, and periostosis. Also known as: Currarino disease, Currarino idiopathic osteoarthropathy, Reginato-Schiapachasse syndrome.