A case report: reconstruction of a damaged knee following treatment of XXXX of the proximal tibia with cryosurgery and cementation.

@entity1 @entity158 @entity571 @entity2967
OBJECTIVE: Reconstruction of a knee damaged by cement packed to cure @entity2967 is sometimes difficult. We reconstructed such a knee by removal of the cement, autologous bone transplantation and distraction osteogenesis using the Ilizarov apparatus. In this paper the results 29 months after the salvage surgery are given. @entity1 AND METHODS: We saw a 31-year-old @entity1 's knee joint that showed osteoarthritic change after curettage, cryosurgery and cementation performed 4 years previously for @entity2967 of the proximal tibia. We reconstructed the knee joint. This procedure included cement removal, alignment correction by tibial osteotomy, subchondral bone reconstruction by autologous bone transplantation, and filling the defect after removing the bone cement by elongating the diaphysis using the Ilizarov apparatus. RESULTS: Distraction was terminated 4 months later when 54 mm of elongation was performed. All devices were removed 12 months after the surgery. Seventeen months after the removal of the apparatus, the range of motion of the right knee was 0 degrees extension and 110 degrees flexion, and the @entity1 was able to walk without @entity158 . CONCLUSIONS: Although the treatment period is long and there may be some complications of Ilizarov lengthening and distraction osteogenesis, this procedure has numerous benefits. Bony defects can be soundly reconstructed and, at the same time, the alignment of the knee can be corrected. Also it is not necessary to reconstruct the ligaments because the insertions are intact. If @entity571 progresses, a surface type total knee replacement can be performed, not constrained type prosthesis, which would be used if the bony structure had not been reconstructed. This procedure may be one of the candidates for reconstructing such knee joints destroyed by bone cement.
