CT Diagnosis of Spondylolysis of the Lumbar Spine / 实用放射学杂志

ABSTRACT

Objective To improve the knowledge of CT appearances of spondylolysis of the lumbar spine.Methods 32 patients with lumbar spinal spondylalysis were examed by Elscint 2400 CT.CT appearances were analyzed.Results The CT feature of spondylolysis was loop-broken sign.Spondylolisthesis was present in 25 cases,the CT mainfestations included the increased anterior pasterior diameter of spinal canal,wich sign,deformity of vertebral canal and pseudobulging disk.Other features included asymmetrical zygapophysial joints.Conclusion “loop-broken sign” is a relatively specific CT appearance of spondylolysis of the lumbar spine,which is significant in diagnosting spondylolysis without spondylolisthesis.