Home Print this page Email this page Users Online: 142
Home About us Editorial board Search Ahead of print Current issue Archives Submit article Instructions Subscribe Contacts Login 
ORIGINAL ARTICLE
Year : 2017  |  Volume : 24  |  Issue : 1  |  Page : 8-13

An analysis on reliability of the lee and wildermuth magnetic resonance imaging grading systems for lumbar neural foraminal stenosis


Department of Radiodiagnosis, Amala Institute of Medical Sciences, Thrissur, Kerala, India

Correspondence Address:
Binoj Varghese
Department of Radiodiagnosis, Amala Institute of Medical Sciences, Thrissur - 680 055, Kerala
India
Login to access the Email id


DOI: 10.4103/1115-3474.192750

Rights and Permissions

Background: There is no uniformly accepted magnetic resonance imaging (MRI) grading system existing for lumbar neural foraminal stenosis (LNFS). Radiologists' reporting on neural foramen stenosis is qualitative and subjective. There are two grading systems proposed by Lee and Wildermuth. Aims : To evaluate the reliability between Lee and Wildermuth grading systems for lumbar foraminal stenosis and analyze their relative merits. Settings and Design: A retrospective, cross-sectional analytical study. Materials and Methods: A total of 136 consecutive patients (63 males and 73 females; mean age 56.3 years) aged above 40 years with low backache found to have degenerative disc disease after MRI of the lumbar spine at a tertiary care hospital in South India from July to September 2015. Two general radiologists reviewed the MRI studies independently for the presence and grading of stenosis at L3/4, L4/5, and L5/S1 neural foramina. They graded neural foramen stenosis with Lee and Wildermuth systems at different occasions and were blinded to all previous grading. Statistical Analysis Used: Interobserver agreement between the radiologists and intraobserver agreement by one radiologist for one system each were analyzed using kappa statistics. Results: Wildermuth system of LNFS showed substantially higher inter- and intra-observer agreements than Lee system. Overall inter-rater and intra-rater agreements (k) for Wildermuth system are 0.700 and 0.762, respectively, and that of Lee system are 0.394 and 0.702. Conclusions: Wildermuth system is more reliable than Lee system for general radiologists. It also accounts slight neural foramen stenosis without perineural fat obliteration unlike in Lee system.


[FULL TEXT] [PDF]*
Print this article     Email this article
 Next article
 Previous article
 Table of Contents

 Similar in PUBMED
   Search Pubmed for
   Search in Google Scholar for
 Related articles
 Citation Manager
 Access Statistics
 Reader Comments
 Email Alert *
 Add to My List *
 * Requires registration (Free)
 

 Article Access Statistics
    Viewed766    
    Printed34    
    Emailed0    
    PDF Downloaded11    
    Comments [Add]    

Recommend this journal