[Indications for and results of surgical scoliosis therapy using VDS instrumentation (ventral derotation spondylodesis)].

The complications of 97 patients who were operated with anterior spinal instrumentation were frequent, but insignificant. 22 of these patients with lumbar and thoracolumbar curves in whom the VDS instrumentation was used were reviewed. A 79% correction was obtained in the coronal plane. Loss of correction was 11% in the first year and further 2% at 56 months average follow up. In the sagittal plane a mild tendency to increased kyphosis was found. A permanent "adding on" phenomenon occurred in one case. The VDS-instrumentation appears the apparatus of choice for treatment of thoracolumbar and lumbar scoliosis, other indications are discussed.