J Korean Radiol Soc.  1994 Feb;30(2):361-367.

MR Findings of Spondylolisthesis: Assessment of Associated Spinal and Neural Foraminal Stenosis

• Kim JS
• Kang HS
• Yoon HK
• Kim CW

Abstract

PURPOSE
To assess the spinal canal and neural foraminal stenosis associated with spondylolisthesis on MR imaging.
MATERIALS AND METHODS
We retrospectively analysed MR findings of 63 cases of spondylolisthesis(degenerative type:23 cases, isthmic type:40 cases) regarding the type and grade of spondylolisthesis, prensence or absence of associated spinal canal stenosis, and the severity of associated neural foraminal stenosis.
RESULTS
Central canal stenosis were more frequent in degenerative type(91%) than isthmic type(33%), and more frequent in grade II spondylolisthesis of degenerative type(100%) and isthmic type(89%) than in grade spondylolisthesis of degenerative type(45%) and isthmic type(20%). There was positive correlation between the severity of neural foraminal stenosis and the grade of spondylolisthesis, whereas there was no significant difference between degenerative and isthmic types.
CONCLUSION
Degenerative spondylolisthesis were frequently associated with central canal stenosis more than isthmic type. When the grade of spondylolisthesis was higher, it was more frequently associated with central canal stenosis and severe neural foraminal stenosis.

MeSH Terms

Constriction, Pathologic*
Magnetic Resonance Imaging
Retrospective Studies
Spinal Canal
Spondylolisthesis*