Three-dimensional simulations of the scoliosis derotation maneuver with Cotrel-Dubousset instrumentation
The derotation maneuver using Cotrel-Dubousset instrumentation (CDI) is intended to correct the counterdirectional transverse plane rotations of the spine and of the vertebrae in thoracic scoliosis. This was simulated in a finite element model of an idealized thoracic scoliosis with an initial 65° s...
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| Veröffentlicht in: | Journal of biomechanics 1994, Vol.27 (2), p.177-181 |
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| container_title | Journal of biomechanics |
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| creator | Gardner-Morse, Mack Stokes, Ian A.F. |
| description | The derotation maneuver using Cotrel-Dubousset instrumentation (CDI) is intended to correct the counterdirectional transverse plane rotations of the spine and of the vertebrae in thoracic scoliosis. This was simulated in a finite element model of an idealized thoracic scoliosis with an initial 65° scoliosis angle and 0° kyphosis angle. After 90° of rod rotation the apical vertebra derotated 50° towards the sagittal plane but the apical vertebra axial rotation worsened by 8°. The scoliosis angle corrected to 29° and a 54° kyphosis was created. If the initial rod curvature was reduced by 9°, the model predicted only small changes in spinal curvature resulting from the forces required to connect the vertebrae to the hooks. Decreased kyphosis and scoliosis curvatures but increased vertebra axial rotation were produced by the derotation maneuver. The increase in apical vertebra axial rotation was reversed by modifying the representation of the motion segments by repositioning their effective axes 30 mm posteriorly. |
| doi_str_mv | 10.1016/0021-9290(94)90206-2 |
| format | Article |
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This was simulated in a finite element model of an idealized thoracic scoliosis with an initial 65° scoliosis angle and 0° kyphosis angle. After 90° of rod rotation the apical vertebra derotated 50° towards the sagittal plane but the apical vertebra axial rotation worsened by 8°. The scoliosis angle corrected to 29° and a 54° kyphosis was created. If the initial rod curvature was reduced by 9°, the model predicted only small changes in spinal curvature resulting from the forces required to connect the vertebrae to the hooks. Decreased kyphosis and scoliosis curvatures but increased vertebra axial rotation were produced by the derotation maneuver. The increase in apical vertebra axial rotation was reversed by modifying the representation of the motion segments by repositioning their effective axes 30 mm posteriorly.</description><identifier>ISSN: 0021-9290</identifier><identifier>EISSN: 1873-2380</identifier><identifier>DOI: 10.1016/0021-9290(94)90206-2</identifier><identifier>PMID: 8132685</identifier><language>eng</language><publisher>Oxford: Elsevier Ltd</publisher><subject>Biological and medical sciences ; Biomechanical Phenomena ; Computer Simulation ; Equipment Design ; Humans ; Internal Fixators ; Kyphosis - physiopathology ; Kyphosis - surgery ; Medical sciences ; Models, Biological ; Orthopedic surgery ; Rotation ; Scoliosis - pathology ; Scoliosis - physiopathology ; Scoliosis - surgery ; Stress, Mechanical ; Surface Properties ; Surgery (general aspects). Transplantations, organ and tissue grafts. Graft diseases ; Thoracic Vertebrae - pathology ; Thoracic Vertebrae - physiopathology ; Thoracic Vertebrae - surgery</subject><ispartof>Journal of biomechanics, 1994, Vol.27 (2), p.177-181</ispartof><rights>1993</rights><rights>1994 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c362t-4624dbd23f9cd1847c54d5d09f11008415d859e1a3180d9db0ed356f052d67f93</citedby><cites>FETCH-LOGICAL-c362t-4624dbd23f9cd1847c54d5d09f11008415d859e1a3180d9db0ed356f052d67f93</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.sciencedirect.com/science/article/pii/0021929094902062$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,776,780,3536,4009,27902,27903,27904,65309</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=4017122$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/8132685$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Gardner-Morse, Mack</creatorcontrib><creatorcontrib>Stokes, Ian A.F.</creatorcontrib><title>Three-dimensional simulations of the scoliosis derotation maneuver with Cotrel-Dubousset instrumentation</title><title>Journal of biomechanics</title><addtitle>J Biomech</addtitle><description>The derotation maneuver using Cotrel-Dubousset instrumentation (CDI) is intended to correct the counterdirectional transverse plane rotations of the spine and of the vertebrae in thoracic scoliosis. This was simulated in a finite element model of an idealized thoracic scoliosis with an initial 65° scoliosis angle and 0° kyphosis angle. After 90° of rod rotation the apical vertebra derotated 50° towards the sagittal plane but the apical vertebra axial rotation worsened by 8°. The scoliosis angle corrected to 29° and a 54° kyphosis was created. If the initial rod curvature was reduced by 9°, the model predicted only small changes in spinal curvature resulting from the forces required to connect the vertebrae to the hooks. Decreased kyphosis and scoliosis curvatures but increased vertebra axial rotation were produced by the derotation maneuver. The increase in apical vertebra axial rotation was reversed by modifying the representation of the motion segments by repositioning their effective axes 30 mm posteriorly.</description><subject>Biological and medical sciences</subject><subject>Biomechanical Phenomena</subject><subject>Computer Simulation</subject><subject>Equipment Design</subject><subject>Humans</subject><subject>Internal Fixators</subject><subject>Kyphosis - physiopathology</subject><subject>Kyphosis - surgery</subject><subject>Medical sciences</subject><subject>Models, Biological</subject><subject>Orthopedic surgery</subject><subject>Rotation</subject><subject>Scoliosis - pathology</subject><subject>Scoliosis - physiopathology</subject><subject>Scoliosis - surgery</subject><subject>Stress, Mechanical</subject><subject>Surface Properties</subject><subject>Surgery (general aspects). Transplantations, organ and tissue grafts. Graft diseases</subject><subject>Thoracic Vertebrae - pathology</subject><subject>Thoracic Vertebrae - physiopathology</subject><subject>Thoracic Vertebrae - surgery</subject><issn>0021-9290</issn><issn>1873-2380</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1994</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNp9kUuLFDEUhYMoYzv6DxRqIT4WpTePSlU2A9I-YcDNuA7p5BYdqaqMuakR_73p6aaXswqX892Tw7mMveTwgQPXHwEEb40w8M6o9wYE6FY8Yhs-9LIVcoDHbHNGnrJnRL8BoFe9uWAXA5dCD92G7W_2GbENccaFYlrc1FCc18mVOlCTxqbssSGfppgoUhMwp3IvNrNbcL3D3PyNZd9sU8k4tZ_XXVqJsDRxoZLXanvEn7Mno5sIX5zeS_br65eb7ff2-ue3H9tP162XWpRWaaHCLgg5Gh_4oHrfqdAFMCPnAIPiXRg6g9xJPkAwYQcYZKdH6ETQ_WjkJXtz9L3N6c-KVOwcyeM01bQ1me21qj4gK_j2YVApLTtleCXVkfQ5EWUc7W2Os8v_LAd7OIU99GwPPVuj7P0prKhrr04frLsZw3np1H3VX590R95NY3aLj3TGFPCei4PN1RHD2tpdxGzJR1w8hpjRFxtSfDjHfy0cpiI</recordid><startdate>1994</startdate><enddate>1994</enddate><creator>Gardner-Morse, Mack</creator><creator>Stokes, Ian A.F.</creator><general>Elsevier Ltd</general><general>Elsevier Science</general><scope>IQODW</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7QO</scope><scope>8FD</scope><scope>FR3</scope><scope>P64</scope><scope>7X8</scope></search><sort><creationdate>1994</creationdate><title>Three-dimensional simulations of the scoliosis derotation maneuver with Cotrel-Dubousset instrumentation</title><author>Gardner-Morse, Mack ; Stokes, Ian A.F.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c362t-4624dbd23f9cd1847c54d5d09f11008415d859e1a3180d9db0ed356f052d67f93</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1994</creationdate><topic>Biological and medical sciences</topic><topic>Biomechanical Phenomena</topic><topic>Computer Simulation</topic><topic>Equipment Design</topic><topic>Humans</topic><topic>Internal Fixators</topic><topic>Kyphosis - physiopathology</topic><topic>Kyphosis - surgery</topic><topic>Medical sciences</topic><topic>Models, Biological</topic><topic>Orthopedic surgery</topic><topic>Rotation</topic><topic>Scoliosis - pathology</topic><topic>Scoliosis - physiopathology</topic><topic>Scoliosis - surgery</topic><topic>Stress, Mechanical</topic><topic>Surface Properties</topic><topic>Surgery (general aspects). Transplantations, organ and tissue grafts. Graft diseases</topic><topic>Thoracic Vertebrae - pathology</topic><topic>Thoracic Vertebrae - physiopathology</topic><topic>Thoracic Vertebrae - surgery</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Gardner-Morse, Mack</creatorcontrib><creatorcontrib>Stokes, Ian A.F.</creatorcontrib><collection>Pascal-Francis</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>Biotechnology Research Abstracts</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>Biotechnology and BioEngineering Abstracts</collection><collection>MEDLINE - Academic</collection><jtitle>Journal of biomechanics</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Gardner-Morse, Mack</au><au>Stokes, Ian A.F.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Three-dimensional simulations of the scoliosis derotation maneuver with Cotrel-Dubousset instrumentation</atitle><jtitle>Journal of biomechanics</jtitle><addtitle>J Biomech</addtitle><date>1994</date><risdate>1994</risdate><volume>27</volume><issue>2</issue><spage>177</spage><epage>181</epage><pages>177-181</pages><issn>0021-9290</issn><eissn>1873-2380</eissn><abstract>The derotation maneuver using Cotrel-Dubousset instrumentation (CDI) is intended to correct the counterdirectional transverse plane rotations of the spine and of the vertebrae in thoracic scoliosis. This was simulated in a finite element model of an idealized thoracic scoliosis with an initial 65° scoliosis angle and 0° kyphosis angle. After 90° of rod rotation the apical vertebra derotated 50° towards the sagittal plane but the apical vertebra axial rotation worsened by 8°. The scoliosis angle corrected to 29° and a 54° kyphosis was created. If the initial rod curvature was reduced by 9°, the model predicted only small changes in spinal curvature resulting from the forces required to connect the vertebrae to the hooks. Decreased kyphosis and scoliosis curvatures but increased vertebra axial rotation were produced by the derotation maneuver. The increase in apical vertebra axial rotation was reversed by modifying the representation of the motion segments by repositioning their effective axes 30 mm posteriorly.</abstract><cop>Oxford</cop><pub>Elsevier Ltd</pub><pmid>8132685</pmid><doi>10.1016/0021-9290(94)90206-2</doi><tpages>5</tpages></addata></record> |
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| ispartof | Journal of biomechanics, 1994, Vol.27 (2), p.177-181 |
| issn | 0021-9290 1873-2380 |
| language | eng |
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| source | MEDLINE; Elsevier ScienceDirect Journals |
| subjects | Biological and medical sciences Biomechanical Phenomena Computer Simulation Equipment Design Humans Internal Fixators Kyphosis - physiopathology Kyphosis - surgery Medical sciences Models, Biological Orthopedic surgery Rotation Scoliosis - pathology Scoliosis - physiopathology Scoliosis - surgery Stress, Mechanical Surface Properties Surgery (general aspects). Transplantations, organ and tissue grafts. Graft diseases Thoracic Vertebrae - pathology Thoracic Vertebrae - physiopathology Thoracic Vertebrae - surgery |
| title | Three-dimensional simulations of the scoliosis derotation maneuver with Cotrel-Dubousset instrumentation |
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