Atlanto-axial instability presenting a rare complication in fibrous dysplasia - a case report

Fibrous dysplasia, in either monostotic or poliostotic form rarely involves the cervical spine. Most of these lesions remain asymtomatic and are incid ental radiographic findings. A symptomatic case of polyostotic fibrous dysp lasia involving the first, second and third cervical vertebra with potentia lly serious consequences is presented. A 53-year old woman who had shown ce rvical myelopathy for about 3 month was diagnosed as having cervical dyspla sia on the basis of plain x-ray and CT scanning. In addition, atlantoaxial instability causing clinical symptoms was detected. A dorsal stabilisation was performed using the DCS System.