| Three-dimensional dynamic in vivo motion of the cervical spine: assessment of measurement accuracy and preliminary findings. | |
| | |
MedLine Citation:
|
PMID: 20359957 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
BACKGROUND CONTEXT: Previous research has quantified cervical spine motion with conventional measurement techniques (eg, cadaveric studies, motion capture systems, and fluoroscopy), but these techniques were not designed to accurately measure three-dimensional (3D) dynamic cervical spine motion under in vivo conditions. PURPOSE: The purposes of this study were to characterize the accuracy of model-based tracking for measuring 3D dynamic cervical spine kinematics and to demonstrate its in vivo application. STUDY DESIGN: Through accuracy assessment and application of technique, in vivo cervical spine motion was measured. METHODS: The accuracy of model-based tracking for measuring cervical spine motion was determined in an in vitro experiment. Tantalum beads were implanted into the vertebrae of an ovine specimen, and biplane X-ray images were acquired as the specimen's neck was manually moved through neck extension and axial neck rotation. The 3D position and orientation of each cervical vertebra were determined from the biplane X-ray images using model-based tracking. For comparison, the position and orientation of each vertebra were also determined by tracking the position of the implanted beads with dynamic radiostereometric analysis. To demonstrate in vivo application of this technique, biplane X-ray images were acquired as a human subject performed two motion tasks: neck extension and axial neck rotation. The positions and orientations of each cervical vertebra were determined with model-based tracking. Cervical spine motion was reported with standard kinematic descriptions of translation and rotation. RESULTS: The in vitro validation demonstrated that model-based tracking is accurate to within +/-0.6 mm and +/-0.6 degrees for measuring cervical spine motion. For the in vivo application, there were significant rotations about all three anatomical axes for both the neck extension and axial neck rotation motion tasks. CONCLUSIONS: Model-based tracking is an accurate technique for measuring in vivo, 3D, dynamic cervical spine motion. Preliminary data acquired using this technique are in agreement with previous studies. It is anticipated that this experimental approach will enhance our understanding of cervical spine motion under normal and pathologic conditions. |
| | |
Authors:
|
Colin P McDonald; Casey C Bachison; Victor Chang; Stephen W Bartol; Michael J Bey |
Related Documents
:
|
10752107 - Radiographic analysis of lumbar motion in relation to lumbosacral stability. investigat... 19404177 - Cervical motion assessment using virtual reality. 11889657 - The mediolateral temporomandibular joint disc position: an in vivo quantitative study. 8775017 - The assessment of intramuscular discrimination using signal detection theory: its poten... 21392557 - Restricted wheel access following a light cycle inversion slows re-entrainment without ... 8579697 - Spatial analysis of honolulu motor vehicle crashes: i. spatial patterns. |
Publication Detail:
|
Type: Journal Article Date: 2010-04-01 |
Journal Detail:
|
Title: The spine journal : official journal of the North American Spine Society Volume: 10 ISSN: 1878-1632 ISO Abbreviation: Spine J Publication Date: 2010 Jun |
Date Detail:
|
Created Date: 2010-05-24 Completed Date: 2010-08-20 Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 101130732 Medline TA: Spine J Country: United States |
Other Details:
|
Languages: eng Pagination: 497-504 Citation Subset: IM |
Copyright Information:
|
Copyright 2010 Elsevier Inc. All rights reserved. |
Affiliation:
|
Bone and Joint Center, Henry Ford Hospital, Detroit, MI 48202, USA. cmcdona2@hfhs.org |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Adult Animals Biomechanics / physiology* Cervical Vertebrae / physiology, radiography* Humans Imaging, Three-Dimensional / methods* Male Movement / physiology Rotation Sheep X-Rays |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: CD161 receptor participates in both impairing NK cell cytotoxicity and the response to glycans and v...
Next Document: Neck Disability Index, short form-36 physical component summary, and pain scales for neck and arm pa...