[Mechanisms of incidence and specifics of spondylolysis and spondylolisthesis course in vertebral osteochondropathy]

Abstract

There were studied up the morphofunctional changes of vertebral motor segments in 21 patients with vertebral osteochondropathy as well as with initial spondylolysis and spondylolisthesis. The patients were from 12 to 21 years old, the average follow-up was 4.5 years. In vertebral deformity in sagittal plane the spondylolystic spondylolisthesis was not revealed in patients, and in particular the leading clinical sign presented was the syndrome of spondyloarthrosis on the level of compensational hyperlordosis; in vertebral osteochondropathy with preserved or the smoothed physiologic vertebral curvatures--dysplastic spondylolisthesis with early occurrence of hyperplastic spondyloarthrosis as a consequence of the Schmorl's hernia in middle lumbar vertebral segments and of instability of the lower lumbar segments due to vertebral sliding shift with subsequent occurrence of hyperplastic spondyloarthrosis predominantly on these levels. The presence of hyperplastic spondyloarthrosis in lower lumbar vertebral segments while overextension causes the risk rise of the vertebral canal stenosis occurrence.