Cervical spine loads and intervertebral motions during whiplash.

Cervical spine loads and intervertebral motions during whiplash. Research Abstract Details 

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Cervical spine loads and intervertebral motions during whiplash. Abstract Text:

Paul C Ivancic,Manohar M Panjabi,Shigeki Ito,

OBJECTIVE: To quantify the dynamic loads and intervertebral motions throughout the cervical spine during simulated rear impacts. METHODS: Using a biofidelic whole cervical spine model with muscle force replication and surrogate head and bench-top mini-sled, impacts were simulated at 3.5, 5, 6.5, and 8 g horizontal accelerations of the T1 vertebra. Inverse dynamics was used to calculate the dynamic cervical spine loads at the centers of mass of the head and vertebrae (C1-T1). The average peak loads and intervertebral motions were statistically compared (P < 0.05) throughout the cervical spine. RESULTS: Load and motion peaks generally increased with increasing impact acceleration. The average extension moment peaks at the lower cervical spine, reaching 40.7 Nm at C7-T1, significantly exceeded the moment peaks at the upper and middle cervical spine. The highest average axial tension peak of 276.9 N was observed at the head, significantly greater than at C4 through T1. The average axial compression peaks, reaching 223.2 N at C5, were significantly greater at C4 through T1, as compared to head-C1. The highest average posterior shear force peak of 269.5 N was observed at T1. CONCLUSION: During whiplash, the cervical spine is subjected to not only bending moments, but also axial and shear forces. These combined loads caused both intervertebral rotations and translations.

Cervical spine loads and intervertebral motions during whiplash. Publishing Authors By Initials

PC Ivancic,MM Panjabi,S Ito,

For similar disorders of environmental origin: wounds and injuries: neck injuries: whiplash injuries research abstracts see: disorders of environmental origin: wounds and injuries: neck injuries: whiplash injuries research

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Cervical spine loads and intervertebral motions during whiplash. Journal Published:

PUBLICATION TYPE: Research Support, N.I.H., Extr

Journal: Traffic injury prevention

VOLUME: 7

Page Numbers: 389-99

Journal Abbreviation:

ISSN: 1538-9588

DAY: 3

MONTH: Dec

YEAR: 2006

Cervical spine loads and intervertebral motions during whiplash. Information

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LANGUAGE: eng

NlmUniqueID: 101144385

Cervical spine loads and intervertebral motions during whiplash. Keywords Mesh Terms:

KEYWORDS: Whiplash Injuries

MESH TERMS: physiopathology

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Grant and Affiliation Information for Cervical spine loads and intervertebral motions during whiplash.

AFFILIATION: Department of Orthopaedics and Rehabilitation, Yale University School of Medicine, New Haven, Connecticut 06520-8071, USA. paul.ivancic@yale.edu

Country: United States

AGENCY: United States NIAMS

GRANT: 1 R01 AR45452 1A2

ACRONYM: AR

MEDLINETA: Traffic Inj Prev

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