Document Detail


Prevalence and motion characteristics of degenerative cervical spondylolisthesis in the symptomatic adult.
MedLine Citation:
PMID:  23680839     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
STUDY DESIGN: Retrospective analysis of kinetic magnetic resonance images.
OBJECTIVE: To define the prevalence of degenerative cervical spondylolisthesis in symptomatic patients and to analyze the motion characteristics and influence on the spinal canal at the affected level.
SUMMARY OF BACKGROUND DATA: When compared with lumbar spondylolisthesis, there are few studies evaluating cervical spondylolisthesis, and the prevalence and motion characteristics of cervical spondylolisthesis are not well defined.
METHODS: Four hundred sixty-eight symptomatic patients underwent upright cervical kinetic magnetic resonance images in neutral, flexion, and extension positions. Segmental displacement and intervertebral angles were measured in 3 positions using computer analysis software. Spondylolisthesis was defined as the vertebral displacement more than 2 mm, and graded based on the magnitude into 2 groups at each level: grade 1 (2-3 mm), grade 2 (>3 mm). Instability was defined as segmental translational motion exceeding 3 mm.
RESULTS: Grade 1 and 2 spondylolisthesis at a minimum of 1 level were observed with a prevalence of 16.4% and 3.4% of all patients, respectively. The most affected levels were C4-C5 (6.2%) and C5-C6 (6.0%) followed by C3-C4 (3.6%) and C6-C7 (3.0%). Translational motion was greater in levels with grade 1 as compared with segments without spondylolisthesis, but there was no difference in angular motion between the 3 groups. Translational instability was observed with a prevalence of 16.7% in grade 2, 4.3% in grade 1, and 3.4% in segments without spondylolisthesis. Space available for the cord at the affected level was decreased and spinal cord compression grade was higher in grade 1 and grade 2 as compared with levels without spondylolisthesis.
CONCLUSION: Cervical spondylolisthesis of at least 2 mm was observed in 20% of patients and was most common at C4-C5 and C5-C6. The presence of spondylolisthesis was associated with increased translational motion and decreased segmental spinal canal diameter.
LEVEL OF EVIDENCE: N/A.
Authors:
Akinobu Suzuki; Michael D Daubs; Hirokazu Inoue; Tetsuo Hayashi; Bayan Aghdasi; Scott R Montgomery; Monchai Ruangchainikom; Xueyu Hu; Christopher J Lee; Christopher J Wang; Benjamin J Wang; Hiroaki Nakamura
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Spine     Volume:  38     ISSN:  1528-1159     ISO Abbreviation:  Spine     Publication Date:  2013 Aug 
Date Detail:
Created Date:  2013-07-31     Completed Date:  2014-03-03     Revised Date:  2014-07-31    
Medline Journal Info:
Nlm Unique ID:  7610646     Medline TA:  Spine (Phila Pa 1976)     Country:  United States    
Other Details:
Languages:  eng     Pagination:  E1115-20     Citation Subset:  IM    
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MeSH Terms
Descriptor/Qualifier:
Adult
Aged
Biomechanical Phenomena
Cervical Vertebrae / pathology,  physiopathology*
Female
Humans
Intervertebral Disc Degeneration / epidemiology,  physiopathology*,  radiography
Joint Instability / epidemiology,  physiopathology,  radiography
Magnetic Resonance Imaging
Male
Middle Aged
Prevalence
Range of Motion, Articular / physiology*
Retrospective Studies
Spinal Cord Compression / epidemiology,  physiopathology,  radiography
Spondylolisthesis / epidemiology,  physiopathology*,  radiography
Young Adult

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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