The International Nomenclature of Constitutional Diseases of Bone is c
riticised and the concept of embryonic osteochondropathy is proposed a
s an alternative approach. It is claimed for example that the term ''c
onstitutional'' has no real scientific or, above all, medical meaning.
The defects of this ''official'' nomenclature are highlighted and a s
limmer classification system of use in the diagnosis of osteochondrobl
astic mesenchymopathies is recommended.