Three-dimensional tomography of relapsed infantile Blount's disease.

Three-dimensional computed tomography reconstructions were done in the preoperative workup of five patients receiving Ilizarov correction for relapsed infantile Blount's disease. There were four girls and one boy with a mean age of 9 years 11 months. In all patients, the computed tomography reconstruction images made assessment of the deformity easier and revealed abnormalities not readily seen on plain radiographs. This information has particular relevance to medial plateau elevation using the Ilizarov frame because it is possible to correct a medial and posterior slope of the tibial plateau using this technique. Also, this imaging modality is safe, easy to do, and is a useful adjunct for planning before surgical correction of relapsed Blount's disease.