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Article: Traumatic instabilities of the cervical spine caused by high-speed axial compression in a human model: An in vitro biomechanical study

TitleTraumatic instabilities of the cervical spine caused by high-speed axial compression in a human model: An in vitro biomechanical study
Authors
Issue Date1999
PublisherLippincott, Williams & Wilkins. The Journal's web site is located at http://www.spinejournal.com
Citation
Spine, 1999, v. 24 n. 5, p. 440-444 How to Cite?
AbstractStudy Design. Traumatic injury of the cervical spine was produced on human cadavers and evaluated with instability tests and radiographs. Objective. To relate traumatic injuries of the cervical spine to instability and patterns of traumatic injury to different levels of impact energy. Summary of Background Data. Data from young human cadavers are rare in traumatic models of the cervical spine, and instabilities caused by axial compression with different impacts remain unknown. Methods. Fourteen cervical spine specimens (C2-C4) obtained from fresh human cadavers were divided evenly into two groups and subjected to axial compressive impact with 30 J and 50 J impact energy, respectively. Pure moments in flexion-extension, left/right lateral bending, and left/right axial rotation were applied to each specimen before and after trauma. The maximum moment was 2.0 Nm in each case. Ranges of motion and neutral zones were measured using stereophotogrammetry. Results. Ranges of motion and neutral zones for both groups increased after trauma. No bony injury was observed on the radiographs after trauma with 30 J, but motions increased significantly in flexion, extension, and axial rotation. All specimens showed bony injuries after trauma with 50 J, whereas motions continued to increase significantly in all directions. The relative neutral zone values were larger than the corresponding range of motion values, except in flexion-extension after trauma with 50 J. Conclusions. The injury patterns of the cervical spine were associated with impact energy, and a high level of impact energy could produce either three-column injury or anterior middle-column injury. Instabilities of the cervical spine caused by compressive trauma increased with the level of impact energy. The neutral zone was more sensitive than the range of motion in representing spinal instability testing was more sensitive than radiographs in evaluating traumatic injury of cervical spine.
Persistent Identifierhttp://hdl.handle.net/10722/170019
ISSN
2014 Impact Factor: 2.297
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorZhu, Qen_US
dc.contributor.authorOuyang, Jen_US
dc.contributor.authorLu, Wen_US
dc.contributor.authorLu, Hen_US
dc.contributor.authorLi, Zen_US
dc.contributor.authorGuo, Xen_US
dc.contributor.authorZhong, Sen_US
dc.date.accessioned2012-10-30T06:04:47Z-
dc.date.available2012-10-30T06:04:47Z-
dc.date.issued1999en_US
dc.identifier.citationSpine, 1999, v. 24 n. 5, p. 440-444en_US
dc.identifier.issn0362-2436en_US
dc.identifier.urihttp://hdl.handle.net/10722/170019-
dc.description.abstractStudy Design. Traumatic injury of the cervical spine was produced on human cadavers and evaluated with instability tests and radiographs. Objective. To relate traumatic injuries of the cervical spine to instability and patterns of traumatic injury to different levels of impact energy. Summary of Background Data. Data from young human cadavers are rare in traumatic models of the cervical spine, and instabilities caused by axial compression with different impacts remain unknown. Methods. Fourteen cervical spine specimens (C2-C4) obtained from fresh human cadavers were divided evenly into two groups and subjected to axial compressive impact with 30 J and 50 J impact energy, respectively. Pure moments in flexion-extension, left/right lateral bending, and left/right axial rotation were applied to each specimen before and after trauma. The maximum moment was 2.0 Nm in each case. Ranges of motion and neutral zones were measured using stereophotogrammetry. Results. Ranges of motion and neutral zones for both groups increased after trauma. No bony injury was observed on the radiographs after trauma with 30 J, but motions increased significantly in flexion, extension, and axial rotation. All specimens showed bony injuries after trauma with 50 J, whereas motions continued to increase significantly in all directions. The relative neutral zone values were larger than the corresponding range of motion values, except in flexion-extension after trauma with 50 J. Conclusions. The injury patterns of the cervical spine were associated with impact energy, and a high level of impact energy could produce either three-column injury or anterior middle-column injury. Instabilities of the cervical spine caused by compressive trauma increased with the level of impact energy. The neutral zone was more sensitive than the range of motion in representing spinal instability testing was more sensitive than radiographs in evaluating traumatic injury of cervical spine.en_US
dc.languageengen_US
dc.publisherLippincott, Williams & Wilkins. The Journal's web site is located at http://www.spinejournal.comen_US
dc.relation.ispartofSpineen_US
dc.subject.meshAdulten_US
dc.subject.meshAtlanto-Axial Joint - Injuries - Physiopathology - Surgeryen_US
dc.subject.meshBiomechanicsen_US
dc.subject.meshCadaveren_US
dc.subject.meshCervical Vertebrae - Injuries - Surgeryen_US
dc.subject.meshFractures, Stress - Complications - Radiography - Surgeryen_US
dc.subject.meshHumansen_US
dc.subject.meshJoint Instability - Etiology - Radiography - Surgeryen_US
dc.subject.meshMaleen_US
dc.subject.meshModels, Anatomicen_US
dc.subject.meshRange Of Motion, Articularen_US
dc.subject.meshSpinal Fractures - Complications - Radiography - Surgeryen_US
dc.titleTraumatic instabilities of the cervical spine caused by high-speed axial compression in a human model: An in vitro biomechanical studyen_US
dc.typeArticleen_US
dc.identifier.emailLu, W:wwlu@hku.hken_US
dc.identifier.authorityLu, W=rp00411en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1097/00007632-199903010-00006en_US
dc.identifier.pmid10084180en_US
dc.identifier.scopuseid_2-s2.0-0033104593en_US
dc.identifier.hkuros43499-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0033104593&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume24en_US
dc.identifier.issue5en_US
dc.identifier.spage440en_US
dc.identifier.epage444en_US
dc.identifier.isiWOS:000079029900005-
dc.publisher.placeUnited Statesen_US
dc.identifier.scopusauthoridZhu, Q=7403313141en_US
dc.identifier.scopusauthoridOuyang, J=10340066300en_US
dc.identifier.scopusauthoridLu, W=7404215221en_US
dc.identifier.scopusauthoridLu, H=8658521300en_US
dc.identifier.scopusauthoridLi, Z=7409077883en_US
dc.identifier.scopusauthoridGuo, X=7404330426en_US
dc.identifier.scopusauthoridZhong, S=8243008000en_US

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