An osteochondrodysplasia characterized by skeletal dysplasia mainly involving the spine and proximal epiphyses resulting in shortening of the trunk and limbs. [ http://purl.obolibrary.org/obo/ECO_0007645 http://purl.obolibrary.org/obo/ECO_0007637 url:https://emedicine.medscape.com/article/1260836-overview url:https://pubmed.ncbi.nlm.nih.gov/16080123/ ]