Spinal hyperostosis and ankylosis in a Gallo-Roman horse from Iwuy ‘Val-de-Calvigny’ (Nord, France): ‘Ankylosing spondylarthritis’ (spondylarthritis ankylopoetica), ‘deforming spondylarthrosis’ (spondylarthrosis deformans) or ‘DISH’ (hyperostosis vertebra

A Gallo-roman horse from the ancient site of Iwuy (“Val-de-Calvigny”, Nord, France) showed extensive lesions of severe vertebral ankylosing hyperostosis reliable to “ankylosing spondylarthritis/-osis” and “deforming spondylarthrosis”. Discussing the case gives the opportunity to a comparative and critical review of spinal hyperostosing and ankylosing diseases in horse and man.