Article: Continuous dynamic spinal motion analysis

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TitleContinuous dynamic spinal motion analysis
AuthorsWong, KWN2
Luk, KDK1
Leong, JCY3
Wong, SF1
Wong, KKY1
KeywordsGender
Lumbar spine
Motion
Videofluoroscopy
Issue Date2006
PublisherLippincott, Williams & Wilkins. The Journal's web site is located at http://www.spinejournal.com
CitationSpine, 2006, v. 31 n. 4, p. 414-419 [How to Cite?]
DOI: http://dx.doi.org/10.1097/01.brs.0000199955.87517.82
AbstractSTUDY DESIGN.: Continuous dynamic lumbar intervertebral flexion-extension is assessed by a videofluoroscopy with a new auto-tracking system. OBJECTIVES.: To develop and validate a new method for the continuous assessment of lumbar kinematics. SUMMARY OF BACKGROUND DATA.: Instability of the lumbar spine is thought to be associated with low back pain, but the diagnosis remains difficult. Functional radiographs have been used for diagnosis of spinal instability but error and limitation exist, whereas videofluoroscopy provides a cost-effective way for such analysis. However, common approaches of image analysis of videofluoroscopic video are tedious and time-consuming because of the low quality of the images. Physicians have to extract the vertebrae manually in most cases; thus, continuous motion analysis is hardly achieved. METHODS.: A new system that can perform automatic vertebrae segmentation and tracking is developed. In vitro and in vivo validity were evaluated. Intervertebral flexion and extension was assessed in 30 healthy volunteers. RESULTS.: In vitro and in vivo validity tests have been conducted with good results. A linear-liked pattern of the intervertebral flexion-extension (IVFE) curves in different levels was found, and the IVFE decreased in descending order from L1-L5 at different points of range of motion in flexion. Conversely, extension is evenly contributed at different levels, and the concavity of lumbar lordosis increases steadily in backward movement. CONCLUSIONS.: The newly developed technique in assessing the dynamic lumbar motion is reliable and able to analyze the lumbar intervertebral movement from videofluoroscopic images automatically and accurately. The proposed system requires less human intervention than common approaches. It may have a potential value in the evaluation of spinal "instability" in clinical practice. ©2006, Lippincott Williams & Wilkins, Inc.
ISSN0362-2436
2011 Impact Factor: 2.078
2011 SCImago Journal Rankings: 0.137
DOIhttp://dx.doi.org/10.1097/01.brs.0000199955.87517.82
ISI Accession Number IDWOS:000235340900007
ReferencesReferences in Scopus
GrantsTracking of lumbar spinal motion in videofluoroscopy
DC Field
Value
dc.contributor.authorWong, KWN
dc.contributor.authorLuk, KDK
dc.contributor.authorLeong, JCY
dc.contributor.authorWong, SF
dc.contributor.authorWong, KKY
dc.date.accessioned2010-09-06T07:57:20Z
dc.date.available2010-09-06T07:57:20Z
dc.date.issued2006
dc.description.abstractSTUDY DESIGN.: Continuous dynamic lumbar intervertebral flexion-extension is assessed by a videofluoroscopy with a new auto-tracking system. OBJECTIVES.: To develop and validate a new method for the continuous assessment of lumbar kinematics. SUMMARY OF BACKGROUND DATA.: Instability of the lumbar spine is thought to be associated with low back pain, but the diagnosis remains difficult. Functional radiographs have been used for diagnosis of spinal instability but error and limitation exist, whereas videofluoroscopy provides a cost-effective way for such analysis. However, common approaches of image analysis of videofluoroscopic video are tedious and time-consuming because of the low quality of the images. Physicians have to extract the vertebrae manually in most cases; thus, continuous motion analysis is hardly achieved. METHODS.: A new system that can perform automatic vertebrae segmentation and tracking is developed. In vitro and in vivo validity were evaluated. Intervertebral flexion and extension was assessed in 30 healthy volunteers. RESULTS.: In vitro and in vivo validity tests have been conducted with good results. A linear-liked pattern of the intervertebral flexion-extension (IVFE) curves in different levels was found, and the IVFE decreased in descending order from L1-L5 at different points of range of motion in flexion. Conversely, extension is evenly contributed at different levels, and the concavity of lumbar lordosis increases steadily in backward movement. CONCLUSIONS.: The newly developed technique in assessing the dynamic lumbar motion is reliable and able to analyze the lumbar intervertebral movement from videofluoroscopic images automatically and accurately. The proposed system requires less human intervention than common approaches. It may have a potential value in the evaluation of spinal "instability" in clinical practice. ©2006, Lippincott Williams & Wilkins, Inc.
dc.description.grantTracking of lumbar spinal motion in videofluoroscopy
dc.description.grantcode9371
dc.description.natureLink_to_subscribed_fulltext
dc.identifier.citationSpine, 2006, v. 31 n. 4, p. 414-419 [How to Cite?]
DOI: http://dx.doi.org/10.1097/01.brs.0000199955.87517.82
dc.identifier.doihttp://dx.doi.org/10.1097/01.brs.0000199955.87517.82
dc.identifier.epage419
dc.identifier.hkuros115411
dc.identifier.isiWOS:000235340900007
dc.identifier.issn0362-2436
2011 Impact Factor: 2.078
2011 SCImago Journal Rankings: 0.137
dc.identifier.issue4
dc.identifier.openurl
dc.identifier.pmid16481951
dc.identifier.scopuseid_2-s2.0-33644846067
dc.identifier.spage414
dc.identifier.urihttp://hdl.handle.net/10722/79677
dc.identifier.volume31
dc.languageeng
dc.publisherLippincott, Williams & Wilkins. The Journal's web site is located at http://www.spinejournal.com
dc.publisher.placeUnited States
dc.relation.ispartofSpine
dc.relation.referencesReferences in Scopus
dc.subject.meshAdult
dc.subject.meshBiomechanics
dc.subject.meshDiagnostic Techniques and Procedures
dc.subject.meshFemale
dc.subject.meshFluoroscopy - instrumentation - methods
dc.subject.meshHumans
dc.subject.meshImage Processing, Computer-Assisted
dc.subject.meshLumbar Vertebrae - physiology - radiography
dc.subject.meshLumbosacral Region - physiology - radiography
dc.subject.meshMale
dc.subject.meshModels, Biological
dc.subject.meshMovement - physiology
dc.subject.meshRange of Motion, Articular - physiology
dc.subjectGender
dc.subjectLumbar spine
dc.subjectMotion
dc.subjectVideofluoroscopy
dc.titleContinuous dynamic spinal motion analysis
dc.typeArticle
Author Affiliations
  1. The University of Hong Kong
  2. Queen Elizabeth Hospital Hong Kong
  3. The Open University of Hong Kong