The hereditary multiple osteochondromatosis is a hereditary disorder characterized by gradual development of numerous osteocartilagenous masses from the metaphyseal region of long bones. The abnormality is transmitted as an autosomal dominant trait and its etiology is unknown but many theories of pathogenesis have been advanced. Four members of a family with hereditary multiple osteochondromatosis who are much shorter in height are presented with a brief review of literatures.