title: Standing roentgenograms in spondylolisthesis.
abstract: Lateral roentgenograms of 50 patients with spondylolisthesis were made in the recumbent and standing positions and compared. Thirteen (26%) showed an increase in the percentage of displacement on standing. Those patients with demonstrable change appeared to have a higher incidence of severe symptomatology. Apparent spondylolysis on recumbent roentgenograms may change to spondylolisthesis on standing lateral roentgenograms. Degenerative spondylolisthesis may be more apparent on standing lateral roentgenograms.
mesh_terms: D000328:Adult; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011187:Posture; D011859:Radiography; D013168:Spondylolisthesis / Q000000981:diagnostic imaging*