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Article: Biomechanical evaluation of stiffness of long-segment instrumented spine
Title | Biomechanical evaluation of stiffness of long-segment instrumented spine |
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Authors | |
Issue Date | 2005 |
Citation | Zhongguo Yi Xue Ke Xue Yuan Xue Bao. Acta Academiae Medicinae Sinicae, 2005, v. 27 n. 2, p. 153-155 How to Cite? |
Abstract | OBJECTIVE: To test the changes of the stiffness of the intact, released, and instrumented spines in an in vitro porcine model. METHODS: Twelve porcine spines (12 segments each) were harvested for the biomechanical tests with Material Test System. Stiffness during flexion, extension, lateral bending, and axial rotation were recorded; then the specimen was released with intervertebral discs and the facet joints removed, followed by repeating the biomechanical tests for stiffness; and finally, a double-rod titanium construct was applied for internal fixation to each released spine and stiffness tests were repeated again. RESULTS: Compared with the intact porcine spines [stiffness during flexion, extension, lateral bending, and axial rotation was 52.89 +/- 15.98, 105.43 +/- 56.38, 42.09 +/- 14.73, and (16.94 +/- 4.85) N x mm/degrees, respectively], the stiffness of the released porcine spines [stiffness during flexion, extension, lateral bending, and axial rotation was 44.04 +/- 13.73, 41.46 +/- 10.80, 31.75 +/- 7.23, and (9.10 +/- 2.07)N x mm/degrees, respectively] significantly decreased (P < 0.05), while significantly increased stiffness was found in the instrumented porcine spines [stiffness during flexion, extension, lateral bending, and axial rotation was 385.96 +/- 143.25, 138.96 +/- 59.41, 152.56 +/- 87.15, and (55.91 +/- 16.49) N x mm/degrees, respectively] (P < 0.05). CONCLUSION: Higher instant stiffness was found in instrumented spine than the intact one during flexion, extension, lateral bending and axial rotation. |
Persistent Identifier | http://hdl.handle.net/10722/170068 |
ISSN | 2023 SCImago Journal Rankings: 0.157 |
DC Field | Value | Language |
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dc.contributor.author | Zhang, J | en_US |
dc.contributor.author | Lu, WW | en_US |
dc.contributor.author | Ye, QB | en_US |
dc.contributor.author | Qiu, GX | en_US |
dc.date.accessioned | 2012-10-30T06:05:07Z | - |
dc.date.available | 2012-10-30T06:05:07Z | - |
dc.date.issued | 2005 | en_US |
dc.identifier.citation | Zhongguo Yi Xue Ke Xue Yuan Xue Bao. Acta Academiae Medicinae Sinicae, 2005, v. 27 n. 2, p. 153-155 | en_US |
dc.identifier.issn | 1000-503X | en_US |
dc.identifier.uri | http://hdl.handle.net/10722/170068 | - |
dc.description.abstract | OBJECTIVE: To test the changes of the stiffness of the intact, released, and instrumented spines in an in vitro porcine model. METHODS: Twelve porcine spines (12 segments each) were harvested for the biomechanical tests with Material Test System. Stiffness during flexion, extension, lateral bending, and axial rotation were recorded; then the specimen was released with intervertebral discs and the facet joints removed, followed by repeating the biomechanical tests for stiffness; and finally, a double-rod titanium construct was applied for internal fixation to each released spine and stiffness tests were repeated again. RESULTS: Compared with the intact porcine spines [stiffness during flexion, extension, lateral bending, and axial rotation was 52.89 +/- 15.98, 105.43 +/- 56.38, 42.09 +/- 14.73, and (16.94 +/- 4.85) N x mm/degrees, respectively], the stiffness of the released porcine spines [stiffness during flexion, extension, lateral bending, and axial rotation was 44.04 +/- 13.73, 41.46 +/- 10.80, 31.75 +/- 7.23, and (9.10 +/- 2.07)N x mm/degrees, respectively] significantly decreased (P < 0.05), while significantly increased stiffness was found in the instrumented porcine spines [stiffness during flexion, extension, lateral bending, and axial rotation was 385.96 +/- 143.25, 138.96 +/- 59.41, 152.56 +/- 87.15, and (55.91 +/- 16.49) N x mm/degrees, respectively] (P < 0.05). CONCLUSION: Higher instant stiffness was found in instrumented spine than the intact one during flexion, extension, lateral bending and axial rotation. | en_US |
dc.language | eng | en_US |
dc.relation.ispartof | Zhongguo yi xue ke xue yuan xue bao. Acta Academiae Medicinae Sinicae | en_US |
dc.subject.mesh | Animals | en_US |
dc.subject.mesh | Biomechanics | en_US |
dc.subject.mesh | Diskectomy | en_US |
dc.subject.mesh | Fracture Fixation, Internal | en_US |
dc.subject.mesh | Internal Fixators | en_US |
dc.subject.mesh | Lumbar Vertebrae - Surgery | en_US |
dc.subject.mesh | Range Of Motion, Articular - Physiology | en_US |
dc.subject.mesh | Spinal Fusion - Methods | en_US |
dc.subject.mesh | Spine - Surgery | en_US |
dc.subject.mesh | Stress, Mechanical | en_US |
dc.subject.mesh | Swine | en_US |
dc.subject.mesh | Thoracic Vertebrae - Surgery | en_US |
dc.title | Biomechanical evaluation of stiffness of long-segment instrumented spine | en_US |
dc.type | Article | en_US |
dc.identifier.email | Lu, WW:wwlu@hku.hk | en_US |
dc.identifier.authority | Lu, WW=rp00411 | en_US |
dc.description.nature | link_to_subscribed_fulltext | en_US |
dc.identifier.pmid | 15960256 | - |
dc.identifier.scopus | eid_2-s2.0-22844444726 | en_US |
dc.identifier.volume | 27 | en_US |
dc.identifier.issue | 2 | en_US |
dc.identifier.spage | 153 | en_US |
dc.identifier.epage | 155 | en_US |
dc.identifier.scopusauthorid | Zhang, J=9747044800 | en_US |
dc.identifier.scopusauthorid | Lu, WW=7404215221 | en_US |
dc.identifier.scopusauthorid | Ye, QB=7202764815 | en_US |
dc.identifier.scopusauthorid | Qiu, GX=7103291762 | en_US |
dc.identifier.issnl | 1000-503X | - |