Mixed sclerosing bone dystrophy presenting with upper extremity deformities. A case report and review of the literature.

We present a detailed study of a 59-year-old white woman with mixed sclerosing bone dystrophy: the rare occurrence of two or more sclerosing bone dysplasias in a single subject. She exhibited features of osteopoikilosis, osteopathia striata and melorheostosis. The symptoms were primarily the result of the melorheostosis lesions which were distributed within the C6 sclerotome. This is an unusual case of mixed sclerosing bone dystrophy in that the upper extremity was the main site of involvement, instead of the usual symmetrical involvement of all limbs. The patient developed a recalcitrant lateral epicondylitis in the un-involved contralateral elbow that required surgical treatment.