Claim: Jean Lobstein described a disorder known today as osteogenesis imperfecta type which is a hereditary, generalized connective tissue disorder.
Evidence: He described a disorder known today as osteogenesis imperfecta type I, which is sometimes called "Lobstein's disease". This disease is an hereditary, generalized connective tissue disorder characterized by bone fragility and a blue-gray sclerae of the eyes. 
He described a disorder known today as osteogenesis imperfecta type I, which is sometimes called "Lobstein's disease". Osteogenesis imperfecta (OI), also known as brittle bone disease, is a group of genetic disorders that mainly affect the bones. The underlying mechanism is usually a problem with connective tissue due to a lack of type I collagen.