| Risk of injury of the cervical spine in sled tests in female volunteers. | |
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MedLine Citation:
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PMID: 17399873 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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BACKGROUND: The description of cervical spine motion and the risk to sustain a cervical spine injury is mainly based on cadaver studies. As the active influence of soft tissue is neglected in cadaver studies, our understanding of the kinematic model for whiplash is limited. Therefore the objective of this study was, to describe the in vivo cervical spine motion and acceleration during rear-end sled collisions to identify sequences of motion in which the risk of injury to the cervical spine is increased. METHODS: A rear-end collision with a speed change (DeltaV) of 6.3 km/h was simulated in a sled test with eight female subjects with no history of prior injury or pain of the cervical spine. A high-speed camera was used to document motion data. Acceleration data were recorded using accelerometers. Acceleration input to the cervical spine was assessed by the simultaneous analysis of the head angle and angular head acceleration as well as the simultaneous analysis of the relative motion and the relative acceleration between the head and T1 to define intervals of increased risk of cervical spine injuries during rear-end collision. FINDINGS: The motion sequence is characterized by the same phases that have already been described for male volunteers. Increasing angular head acceleration can explain facet joint injuries during the extension movement (100-120 ms) and hence occur about 50 ms later than shown in cadaver models. In the late rebound the combination of maximal ventral head acceleration and head movement is underestimated and can be responsible for soft tissue injuries. INTERPRETATION: The study shows that during the extension phase and the late rebound phase, acceleration and movement pattern occur that could lead to cervical spine injuries. |
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Authors:
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Christoph Dehner; Martin Elbel; Sylvia Schick; Felix Walz; Wolfram Hell; Michael Kramer |
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Publication Detail:
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Type: Journal Article Date: 2007-03-30 |
Journal Detail:
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Title: Clinical biomechanics (Bristol, Avon) Volume: 22 ISSN: 0268-0033 ISO Abbreviation: Clin Biomech (Bristol, Avon) Publication Date: 2007 Jul |
Date Detail:
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Created Date: 2007-06-04 Completed Date: 2007-08-24 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8611877 Medline TA: Clin Biomech (Bristol, Avon) Country: England |
Other Details:
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Languages: eng Pagination: 615-22 Citation Subset: IM |
Affiliation:
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Department for Trauma, Hand, Plastic and Reconstructive Surgery, University of Ulm, Germany. christoph.dehner@uniklinik-ulm.de <christoph.dehner@uniklinik-ulm.de> |
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| MeSH Terms | |
Descriptor/Qualifier:
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Acceleration Adult Athletic Injuries / physiopathology* Biomechanics Cervical Vertebrae / injuries* Female Humans Neck Injuries / physiopathology* Whiplash Injuries / physiopathology |
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