| A new biofidelic sagittal plane surrogate neck for head-first impacts. | |
| | |
MedLine Citation:
|
PMID: 20544576 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
OBJECTIVE: To evaluate a prototype sagittal plane surrogate neck model designed to provide a biofidelic response to head-first impacts with a straightened cervical posture. METHODS: Published biomechanical studies were used in the design to define the range of motion (ROM) and stiffness in both flexion-extension rotation and axial compression. The neck was tested in a series of head-first impacts on a drop tower to investigate the temporal aspects of the kinetic axial force response for the head and neck. A separate series of flexion-extension tests was conducted in a spinal motion simulator to assess its ROM and bending stiffness. RESULTS: In impacts with a 104 N axial preload, the surrogate head and neck displayed a bimodal response to force development in agreement with published studies of cadaveric head-first impacts. In bending without an axial preload, the neck had an ROM and bending stiffness representative of cadaveric human spines and it included a large neutral zone, but with the incremental addition of axial preload these metrics were somewhat reduced. CONCLUSIONS: The model appears suitable for studying the scenario of sagittal plane, aligned column impacts. Further design refinements are required to provide biofidelity in both sagittal bending and head-first impacts using a single level of axial preload. This would be necessary to study impact scenarios where considerable sagittal plane neck rotation occurs at impact. The model has identified some key concepts that must be considered for continued design and improvement of a dedicated dummy neck for head-first impacts. |
| | |
Authors:
|
Tim S Nelson; Peter A Cripton |
Related Documents
:
|
9122766 - Analysis of lumbar spine and hip motion during forward bending in subjects with and wit... 8202796 - Cyclic compression-flexion loading of the human lumbar spine. 1490036 - Impairment evaluation based on spinal range of motion in normal subjects. 4033096 - An hypothesis for the role of the spine in human locomotion: a challenge to current thi... 7056616 - This pineal gland does not mediate phase shifts in the disc shedding rhythm of the rat ... 11463216 - Photic entrainment of the circadian clock: from drosophila to mammals. |
Publication Detail:
|
Type: Journal Article |
Journal Detail:
|
Title: Traffic injury prevention Volume: 11 ISSN: 1538-957X ISO Abbreviation: Traffic Inj Prev Publication Date: 2010 Jun |
Date Detail:
|
Created Date: 2010-06-14 Completed Date: 2010-07-08 Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 101144385 Medline TA: Traffic Inj Prev Country: England |
Other Details:
|
Languages: eng Pagination: 309-19 Citation Subset: IM |
Affiliation:
|
Orthopaedic and Injury Biomechanics Group, Department of Mechanical Engineering and The International Collaboration on Repair Discoveries (ICORD), University of British Columbia, Vancouver, British Columbia, Canada. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Accidents, Traffic
/
classification* Biomechanics Cervical Vertebrae / injuries Computer Simulation Craniocerebral Trauma Humans Manikins* Models, Biological Neck / physiology*, physiopathology* Neck Injuries Range of Motion, Articular Rotation |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Incorporation of lower neck shear forces to predict facet joint injury risk in low-speed automotive ...
Next Document: The Frontal-Impact Response of a Booster-Seated Child-Size PMHS.