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Degenerative retrolisthesis: Is it a compensatory mechanism for sagittal imbalance?
MedLine Citation:
PMID:  23997140     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
We investigated the spinopelvic morphology and global sagittal balance of patients with a degenerative retrolisthesis or anterolisthesis. A total of 269 consecutive patients with a degenerative spondylolisthesis were included in this study. There were 95 men and 174 women with a mean age of 64.3 years (sd 10.5; 40 to 88). A total of 106 patients had a pure retrolisthesis (R group), 130 had a pure anterolisthesis (A group), and 33 had both (R+A group). A backward slip was found in the upper lumbar levels (mostly L2 or L3) with an almost equal gender distribution in both the R and R+A groups. The pelvic incidence and sacral slope of the R group were significantly lower than those of the A (both p < 0.001) and R+A groups (both p < 0.001). The lumbar lordosis of the R+A group was significantly greater than that of the R (p = 0.025) and A groups (p = 0.014). The C7 plumb line of the R group was located more posteriorly than that of the A group (p = 0.023), but was no different from than that of the R+A group (p = 0.422). The location of C7 plumb line did not differ between the three groups (p = 0.068). The spinosacral angle of the R group was significantly smaller than that of the A group (p < 0.001) and R+A group (p < 0.001). Our findings imply that there are two types of degenerative retrolisthesis: one occurs primarily as a result of degeneration in patients with low pelvic incidence, and the other occurs secondarily as a compensatory mechanism in patients with an anterolisthesis and high pelvic incidence. Cite this article: Bone Joint J 2013;95-B:1244-9.
Authors:
C-H Jeon; J-U Park; N-S Chung; K-H Son; Y-S Lee; J-J Kim
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  The bone & joint journal     Volume:  95-B     ISSN:  2049-4408     ISO Abbreviation:  Bone Joint J     Publication Date:  2013 Sep 
Date Detail:
Created Date:  2013-09-02     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101599229     Medline TA:  Bone Joint J     Country:  England    
Other Details:
Languages:  eng     Pagination:  1244-9     Citation Subset:  AIM; IM    
Affiliation:
Ajou University School of Medicine, Department of Orthopaedic Surgery, San 5 Wonchon-dong, Youngtong-gu, Suwon, Kyounggi-do Suwon, Korea.
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