Relation between X-ray changes and clinical symtoms in degenerative spondylolisthesis.

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A clinical and radiological study was carried out in forty-three patients of symptomatic degenerative spondylolisthesis of the spine. Evaluations of the clinical symptoms were done on the four items. Radiograms were checked and measured on the fifteen items in each patient. The results of the analysis disclosed that the angle which vertebral body and lamina made and the angle which vertebral body and intervertebral joint line made were decreased in the slipped vertebra more those in the other vertebrae. The angle which the two vertebrae at the slipped area made and the height of the disc were also decreased. On the other hand, cineradiographic examination revealed that hypermobility of the intervertebral segment at the slipped area was not noticed.Clinical evaluations were not correlated so well with the degrees of the abnormal changes on the radiograms. Factor analysis drew three independent factors, which suggested abnormal changes of the posterior and anterior elements of the spine on the radiograms and neurological element on the clinical evaluations such as weakness of the muscles.
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