Multiple hereditary exostosis. Case report

Abstract

Multiple hereditary exostosis is an autosomal dominant disorder, usually found in the first two decades of life. It is characterized by the altered metaphyseal remodeling and asymmetric bone growth with a secondary shortening of extremities bones.  These bone exostoses surrounded by cartilages become prominent to the soft parts, and are different from the Ollier disease because this last one is not hereditary.  The authors present the case of a woman, aged 36 years, presenting a shortening of the members, especially ulna and radius, metacarpus and metatarsus. Her 18-years-old son was also affected by this disease, having an associated Madelug deformity (shortening of ulna and radius, and radius bowing).