Y-Angle Stenosis of Lumbar Spine: New Concept of Lumbar Stenosis.
- Author:
Young Soo KIM
1
;
Yong Eun CHO
;
Hyung Chun PARK
;
Doh Heum YOON
;
Sung Woo ROH
Author Information
1. Department of Neurosurgery, Yonsei University College of Medicine, Seoul, Korea.
- Publication Type:Original Article
- Keywords:
Lumbar stenosis;
Y-angle;
Narrow Y-angle stenosis;
Wide Y-angle stenosis
- MeSH:
Constriction, Pathologic*;
Diagnosis;
Ligaments;
Magnetic Resonance Imaging;
Reference Values;
Spinal Stenosis;
Spine*;
Tomography, X-Ray Computed
- From:Journal of Korean Neurosurgical Society
1993;22(1):63-70
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
Authors measured the Y-shaped angle made by both yellow ligaments and both laminae named Y-angle at the spinal CT scan in normal and lumbar stenosis group. The normal range of Y-angle is between 60 degrees and 95 degrees. Lumbar stenosis is classified into narrow Y-angle stenosis(<60 degrees) and wide Y-angle stenosis(>95 degrees) by Y-angle. Narrow Y-angle stenosis is most common in degenerative spondylotic stenosis. Wide Y-angle is most common in congenital stenosis. The Y-angle is a simple and useful diagnostic indicator in the diagnosis of lumbar spinal stenosis on CT scan and MRI scan.
