RT Journal A1 Schoenfeld, Andrew J. A1 Koplin, Stephanie A. A1 Garcia, Ron A1 Hornicek, Francis J. A1 Mankin, Henry J. A1 Raskin, Kevin A. A1 Springfield, Dempsey A1 Rosenberg, Andrew E. A1 Schwab, Joseph H. T1 Monostotic Fibrous Dysplasia of the SpineA Report of Seven Cases JF The Journal of Bone & Joint Surgery JO The Journal of Bone & Joint Surgery YR 2010 FD April 1 VO 92 IS 4 SP 984 OP 988 DO 10.2106/JBJS.I.00727 UL http://dx.doi.org/10.2106/JBJS.I.00727 AB Monostotic fibrous dysplasia of the spine is rare, with the cases of fewer than thirty-five patients discussed in the literature. Dahlin and Unni reviewed the cases of 418 patients with monostotic fibrous dysplasia and noted six (1.4%) involving the spine1. In a series reported by Harris et al., one patient with spine involvement was noted in a total of thirteen patients with monostotic fibrous dysplasia2. Most reports have described the case of a single patient with minimal to no follow-up1-23. As a result, the natural history and ideal treatment for this condition remain poorly understood. For example, the prevalence of scoliosis in patients with polyostotic fibrous dysplasia has been found to be up to 40%24, whereas scoliosis in monostotic fibrous dysplasia appears to be quite rare25. The reported treatment of monostotic fibrous dysplasia in the spine also has varied widely, from surgical resection4,5,7,9-19 to biopsy and observation2,21.