Document Detail

Motion characteristics of the vertebral segments with lumbar degenerative spondylolisthesis in elderly patients.
MedLine Citation:
PMID:  22892705     Owner:  NLM     Status:  MEDLINE    
OBJECTIVE: Although some studies have reported on the kinematics of the lumbar segments with degenerative spondylolisthesis (DS), few data have been reported on the in vivo 6 degree-of-freedom kinematics of different anatomical structures of the diseased levels under physiological loading conditions. This research is to study the in vivo motion characteristics of the lumbar vertebral segments with L4 DS during weight-bearing activities.
METHODS: Nine asymptomatic volunteers (mean age 54.4) and 9 patients with L4 DS (mean age 73.4) were included. Vertebral kinematics was obtained using a combined MRI/CT and dual fluoroscopic imaging technique. During functional postures (supine, standing upright, flexion, and extension), disc heights, vertebral motion patterns and instability were compared between the two groups.
RESULTS: Although anterior disc heights were smaller in the DS group than in the normal group, the differences were only significant at standing upright. Posterior disc heights were significantly smaller in DS group than in the normal group under all postures. Different vertebral motion patterns were observed in the DS group, especially in the left-right and cranial-caudal directions during flexion and extension of the body. However, the range of motions of the both groups were much less than the reported criteria of lumbar spinal instability.
CONCLUSION: The study showed that lumbar vertebra with DS has disordered motion patterns. DS did not necessary result in vertebral instability. A restabilization process may have occurred and surgical treatment should be planned accordingly.
Jun Miao; Shaobai Wang; Zongmiao Wan; Won Man Park; Qun Xia; Kirkham Wood; Guoan Li
Related Documents :
8176065 - The pitch of electrically presented sinusoids.
10511635 - Effect of current level on electrode discrimination in electrical stimulation.
14587605 - Forward masking in different cochlear implant systems.
1175105 - Principles underlying new methods for chronic neural recording.
17850195 - Basal ganglia local field potentials: applications in the development of new deep brain...
6850755 - Endogenous control of spinule formation in horizontal cells of the teleost retina.
Publication Detail:
Type:  Journal Article; Research Support, N.I.H., Extramural     Date:  2012-08-15
Journal Detail:
Title:  European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society     Volume:  22     ISSN:  1432-0932     ISO Abbreviation:  Eur Spine J     Publication Date:  2013 Feb 
Date Detail:
Created Date:  2013-01-28     Completed Date:  2013-07-22     Revised Date:  2014-02-04    
Medline Journal Info:
Nlm Unique ID:  9301980     Medline TA:  Eur Spine J     Country:  Germany    
Other Details:
Languages:  eng     Pagination:  425-31     Citation Subset:  IM    
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Aged, 80 and over
Biomechanical Phenomena / physiology
Joint Instability / physiopathology*
Lumbar Vertebrae / physiopathology*
Middle Aged
Posture / physiology*
Range of Motion, Articular / physiology*
Spondylolisthesis / physiopathology*
Weight-Bearing / physiology
Grant Support

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

Previous Document:  Exposure to disturbing noise and risk of long-term sickness absence among office workers: a prospect...
Next Document:  Surgical management of contiguous multilevel thoracolumbar tuberculous spondylitis.