Abnormal development of cartilage and bone.

Synonyms: Spondylo-Epimetaphyseal Dysplasia With Myotonia, Spondyloepiphyseal Dysplasia, SEDT, X-Linked, X Linked SEDT, Sost-Related Sclerosing Bone Dysplasia, Schwartz-Jampel Syndrome, Type 1, Schwartz Jampel Syndrome, Syndrome, Schwartz-Jampel-Aberfeld, Melnick-Needles Osteodysplasty, Chondrodystrophic Myotonia, SED, X-Linked, Schwartz-Jampel Syndrome, Myotonia, Chondrodystrophic, SED Tarda, Melnick Needles Osteodysplasty, Hyperostosis Corticalis Generalisata, X-Linked Spondyloepiphyseal Dysplasia Tarda, Late Onset Spondyloepiphyseal Dysplasia, Melnick-Needles Syndrome, Endosteal Hyperostosis, Autosomal Recessive, Late Spondyloepiphyseal Dysplasia, Spondyloepiphyseal Dysplasia, Late, Myotonic Myopathy, Dwarfism, Chondrodystrophy, And Ocular And Facial Abnormalities, Dyschondroplasia, Osteodysplasty, Melnick-Needles, SJA Syndrome, Dyschondroplasias, X-Linked SEDT, Spondyloepiphyseal Dysplasia, Late-Onset, Osteochondrodysplasias, Sost Sclerosing Bone Dysplasia, Multiple Epiphyseal Dysplasia, Osteochondrodysplasia, Schwartz Jampel Aberfeld syndrome, Osteodysplasty of Melnick and Needles, Myotonic Chondrodystrophy, Melnick Needles Syndrome, Hyperphosphatasemia Tarda, Schwartz-Jampel-Aberfeld Syndrome, X-Linked SED, Schwartz Jampel Syndrome, Type 1, Chondrodystrophy, Myotonic, Spondyloepiphyseal Dysplasia Tarda, X Linked, Spondyloepiphyseal Dysplasia Tarda, X-Linked, Late-Onset Spondyloepiphyseal Dysplasia, Van Buchem Disease, X Linked Spondyloepiphyseal Dysplasia Tarda, Dysplasia, Spondyloepiphyseal, X Linked SED