Radioulnar Synostosis-Microcephaly-Scoliosis Syndrome, also known as tsukahara syndrome, is related to radioulnar synostosis with microcephaly, short stature, scoliosis, and mental retardation and brachydactyly, type a1, with short stature, scoliosis, microcephaly, ptosis, hearing loss, and mental retardation. Affiliated tissues include bone, and related phenotypes are intellectual disability and scoliosis