Effect of osteoporosis on internal fixation after spinal osteotomy: A finite element analysis.

Background: Severe kyphotic deformity can affect the quality of life of the elderly and is commonly treated by an osteotomy. Considering that the elderly often suffer from osteoporosis, the safety and efficacy of internal fixation are particularly important. The aim of this study was to analyse the effect of osteoporosis on internal fixation after spinal osteotomy.