Familial multiple exostosis arising from bones of enchondral as well as membranous (in a family affecting seven members)

Familial multiple exostosis in a family of seven members who are affected found that exostosis was arising both from bones of enchondral as well as membranous ossification, which was sessile as well as pedunculated and was larger in size at the growing ends of the bones. The lesions occur only in bones that develop from cartilage (endochondral ossification). In our study, we have noticed lesions occurring in both endochondral as well as membranous bone. Till now, no article has mentioned about membranous origin (clavicle).