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Article: Continuous dynamic spinal motion analysis

TitleContinuous dynamic spinal motion analysis
Authors
KeywordsGender
Lumbar spine
Motion
Videofluoroscopy
Issue Date2006
PublisherLippincott, Williams & Wilkins. The Journal's web site is located at http://www.spinejournal.com
Citation
Spine, 2006, v. 31 n. 4, p. 414-419 How to Cite?
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.
Persistent Identifierhttp://hdl.handle.net/10722/79677
ISSN
2015 Impact Factor: 2.439
2015 SCImago Journal Rankings: 1.459
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorWong, KWNen_HK
dc.contributor.authorLuk, KDKen_HK
dc.contributor.authorLeong, JCYen_HK
dc.contributor.authorWong, SFen_HK
dc.contributor.authorWong, KKYen_HK
dc.date.accessioned2010-09-06T07:57:20Z-
dc.date.available2010-09-06T07:57:20Z-
dc.date.issued2006en_HK
dc.identifier.citationSpine, 2006, v. 31 n. 4, p. 414-419en_HK
dc.identifier.issn0362-2436en_HK
dc.identifier.urihttp://hdl.handle.net/10722/79677-
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.en_HK
dc.languageengen_HK
dc.publisherLippincott, Williams & Wilkins. The Journal's web site is located at http://www.spinejournal.comen_HK
dc.relation.ispartofSpineen_HK
dc.subjectGenderen_HK
dc.subjectLumbar spineen_HK
dc.subjectMotionen_HK
dc.subjectVideofluoroscopyen_HK
dc.subject.meshAdulten_HK
dc.subject.meshBiomechanicsen_HK
dc.subject.meshDiagnostic Techniques and Proceduresen_HK
dc.subject.meshFemaleen_HK
dc.subject.meshFluoroscopy - instrumentation - methodsen_HK
dc.subject.meshHumansen_HK
dc.subject.meshImage Processing, Computer-Assisteden_HK
dc.subject.meshLumbar Vertebrae - physiology - radiographyen_HK
dc.subject.meshLumbosacral Region - physiology - radiographyen_HK
dc.subject.meshMaleen_HK
dc.subject.meshModels, Biologicalen_HK
dc.subject.meshMovement - physiologyen_HK
dc.subject.meshRange of Motion, Articular - physiologyen_HK
dc.titleContinuous dynamic spinal motion analysisen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0887-9869&volume=31&issue=4&spage=414&epage=419&date=2006&atitle=Continuous+Dynamic+Spinal+Motion+Analysisen_HK
dc.identifier.emailLuk, KDK:hcm21000@hku.hken_HK
dc.identifier.emailWong, KKY:kykwong@cs.hku.hken_HK
dc.identifier.authorityLuk, KDK=rp00333en_HK
dc.identifier.authorityWong, KKY=rp01393en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1097/01.brs.0000199955.87517.82en_HK
dc.identifier.pmid16481951-
dc.identifier.scopuseid_2-s2.0-33644846067en_HK
dc.identifier.hkuros115411en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-33644846067&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume31en_HK
dc.identifier.issue4en_HK
dc.identifier.spage414en_HK
dc.identifier.epage419en_HK
dc.identifier.isiWOS:000235340900007-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridWong, KWN=7404759305en_HK
dc.identifier.scopusauthoridLuk, KDK=7201921573en_HK
dc.identifier.scopusauthoridLeong, JCY=35560782200en_HK
dc.identifier.scopusauthoridWong, SF=22236051500en_HK
dc.identifier.scopusauthoridWong, KKY=24402187900en_HK

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