Comparison of Pedicle Subtraction and Smith-Petersen Osteotomies in Correcting Thoracic Kyphosis When Closed With a Central Hook-Rod Construct

Abstract

4.

Pedicle subtraction osteotomy in the thoracic spine and thoracolumbar junction: a retrospective series of 28 cases

“…Our experience was a 17.5°in the upper thoracic and 26.2°in the lower thoracic region confirming some limitation due to the rib cage in the upper thoracic spine. The average global thoracic kyphosis reduction in our series was 24.2°which is similar to other series [2][3][4]. The combination of PSO with SPO in the Lewis et al series [3], when possible, showed a better correction of the kyphosis at 36.3°.…”

“…The average global thoracic kyphosis reduction in our series was 24.2°which is similar to other series [2][3][4]. The combination of PSO with SPO in the Lewis et al series [3], when possible, showed a better correction of the kyphosis at 36.3°. Another important point was the risk of anterior vertebral collapse or translation during osteotomy closure.…”

“…This could explain why we obtained 17.5°of correction in the upper thoracic spine compared to the 10.7°in O'Shaughnessy series [2]. Lewis et al [3] with a large rib resection got a similar correction as our experience in the upper thoracic spine (Fig. 5).…”

“…3). The kyphosis reduction in those patients leaded to a lumbar lordosis readaptation as shown by Lewis et al [3]. The global balance remained good after the surgery with less constraint on the lumbar spine.…”

“…As of yet there is no large series available in the literature allowing one to describe well enough the experience and the best method to use for PSO at the level of the thoracic vertebral column [3]. Indeed, the results obtained at the upper level of the thoracic spine show inferior or weak corrections rather than middle or lower level where corrections are of a larger magnitude [2].…”