The effects of disc degeneration and muscle dysfunction on cervical spine stability from a biomechanical study.
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| Title: | The effects of disc degeneration and muscle dysfunction on cervical spine stability from a biomechanical study. |
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| Authors: | Cheng CH (AUTHOR), Chen PJ (AUTHOR), Kuo YW (AUTHOR), Wang JL (AUTHOR), Cheng, C-H1 (AUTHOR), Chen, P-J (AUTHOR), Kuo, Y-W (AUTHOR), Wang, J-L (AUTHOR) |
| Source: | Proceedings of the Institution of Mechanical Engineers -- Part H -- Journal of Engineering in Medicine (Professional Engineering Publishing). 2011 Feb, Vol. 225 Issue 2, p149-157. 9p. |
| Abstract: | Disc degeneration and muscle dysfunction are common spinal degenerations in the elderly. This in vitro study was carried out to investigate the effects of these two degenerative changes on spinal stability. The stability of nine porcine cervical spines (C2-T1) with mechanically simulated cervical muscles (sternocleidomastoid (SCM), splenius capitis (SPL), semispinalis capitis (SSC)) was tested before and after experiment-induced disc degeneration. The patterns of muscle recruitments included: no muscle recruitment, normal recruitment of SCM/SPL/SSC, and SCM/SPL/SSC muscle dysfunctions. The neutral zone (NZ) and the range of motion (ROM) in the sagittal plane were measured to determine spinal stability. The results showed that the NZ and the ROM of a degenerative spine were larger than those of an intact spine under no muscle recruitment, but not under muscle recruitments. For both intact and degenerative spines, the NZ and the ROM were greatest under no muscle recruitment, followed by SSC dysfunction, SCM dysfunction, and SPL dysfunction, and smallest under normal muscle recruitment. In conclusion, muscle recruitments stabilize both intact and degenerative cervical spines, while dysfunctional muscles do not maintain stability efficiently as normal muscles do. Thus, spinal stability is more significantly affected by muscle dysfunction than by disc degeneration. Muscle training is suggested for the elderly with spinal degeneration to improve stability. [ABSTRACT FROM AUTHOR] |
| Copyright of Proceedings of the Institution of Mechanical Engineers -- Part H -- Journal of Engineering in Medicine (Professional Engineering Publishing) is the property of Professional Engineering Publishing and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 104853937 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: The effects of disc degeneration and muscle dysfunction on cervical spine stability from a biomechanical study. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Cheng+CH%22">Cheng CH</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Chen+PJ%22">Chen PJ</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Kuo+YW%22">Kuo YW</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wang+JL%22">Wang JL</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Cheng%2C+C-H%22">Cheng, C-H</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Chen%2C+P-J%22">Chen, P-J</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Kuo%2C+Y-W%22">Kuo, Y-W</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wang%2C+J-L%22">Wang, J-L</searchLink> (AUTHOR) – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Proceedings+of+the+Institution+of+Mechanical+Engineers+--+Part+H+--+Journal+of+Engineering+in+Medicine+%28Professional+Engineering+Publishing%29%22">Proceedings of the Institution of Mechanical Engineers -- Part H -- Journal of Engineering in Medicine (Professional Engineering Publishing)</searchLink>. 2011 Feb, Vol. 225 Issue 2, p149-157. 9p. – Name: Abstract Label: Abstract Group: Ab Data: Disc degeneration and muscle dysfunction are common spinal degenerations in the elderly. This in vitro study was carried out to investigate the effects of these two degenerative changes on spinal stability. The stability of nine porcine cervical spines (C2-T1) with mechanically simulated cervical muscles (sternocleidomastoid (SCM), splenius capitis (SPL), semispinalis capitis (SSC)) was tested before and after experiment-induced disc degeneration. The patterns of muscle recruitments included: no muscle recruitment, normal recruitment of SCM/SPL/SSC, and SCM/SPL/SSC muscle dysfunctions. The neutral zone (NZ) and the range of motion (ROM) in the sagittal plane were measured to determine spinal stability. The results showed that the NZ and the ROM of a degenerative spine were larger than those of an intact spine under no muscle recruitment, but not under muscle recruitments. For both intact and degenerative spines, the NZ and the ROM were greatest under no muscle recruitment, followed by SSC dysfunction, SCM dysfunction, and SPL dysfunction, and smallest under normal muscle recruitment. In conclusion, muscle recruitments stabilize both intact and degenerative cervical spines, while dysfunctional muscles do not maintain stability efficiently as normal muscles do. Thus, spinal stability is more significantly affected by muscle dysfunction than by disc degeneration. Muscle training is suggested for the elderly with spinal degeneration to improve stability. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Proceedings of the Institution of Mechanical Engineers -- Part H -- Journal of Engineering in Medicine (Professional Engineering Publishing) is the property of Professional Engineering Publishing and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1243/09544119JEIM805 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 9 StartPage: 149 Titles: – TitleFull: The effects of disc degeneration and muscle dysfunction on cervical spine stability from a biomechanical study. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Cheng CH – PersonEntity: Name: NameFull: Chen PJ – PersonEntity: Name: NameFull: Kuo YW – PersonEntity: Name: NameFull: Wang JL – PersonEntity: Name: NameFull: Cheng, C-H – PersonEntity: Name: NameFull: Chen, P-J – PersonEntity: Name: NameFull: Kuo, Y-W – PersonEntity: Name: NameFull: Wang, J-L IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 02 Text: 2011 Feb Type: published Y: 2011 Identifiers: – Type: issn-print Value: 09544119 Numbering: – Type: volume Value: 225 – Type: issue Value: 2 Titles: – TitleFull: Proceedings of the Institution of Mechanical Engineers -- Part H -- Journal of Engineering in Medicine (Professional Engineering Publishing) Type: main |
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