A new sign of spondylolisthesis.
D000328:Adult; D002675:Child, Preschool; D003937:Diagnosis, Differential; D006801:Humans; D008159:Lumbar Vertebrae / Q000000981:diagnostic imaging; D011859:Radiography; D012447:Sacrum / Q000000981:diagnostic imaging; D013168:Spondylolisthesis / Q000000981:diagnostic imaging* / Q000209:etiology