spondyloepiphyseal dysplasia with metatarsal shortening (MONDO_0012206) is a rare, genetic, primary bone dysplasia disorder characterized by early-onset, progressive pseudorheumatoid arthritis, platyspondyly, and hypoplasia/dysplasia of the third and fourth metatarsals, in the absence of ophthalmologic, cleft palate, and height anomalies. Also known as: Czech dysplasia, Czech dysplasia metatarsal type, Czech dysplasia, metatarsal type, SED with metatarsal shortening, pseudorheumatoid dysplasia, progressive, with hypoplastic toes, spondyloepiphyseal dysplasia with precocious osteoarthritis.