Accuracy and feasibility of dual fluoroscopy and model-based tracking to quantify in vivo hip kinematics during clinical exams

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Publication Type pre-print
School or College <blank>
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Creator Maas, Steve
Other Author Kapron, Ashley L.; Aoki, Stephen; K.; Peters, Christopher L.; Bey, Michael J.; Zauel, Roger; Anderson, Andrew E.
Title Accuracy and feasibility of dual fluoroscopy and model-based tracking to quantify in vivo hip kinematics during clinical exams
Date 2014-01-01
Description Accurate measurements of in-vivo hip kinematics may elucidate the mechanisms responsible for impaired function and chondrolabral damage in hips with femoroacetabular impingement (FAI). The objectives of this study were to quantify the accuracy and demonstrate the feasibility of using dual fluoroscopy to measure in-vivo hip kinematics during clinical exams used in the assessment of FAI. Steel beads were implanted into the pelvis and femur of two cadavers. Specimens were imaged under dual fluoroscopy during the impingement exam, FABER test, and rotational profile. Bead locations measured with model-based tracking were compared to those measured using dynamic radiostereometric analysis. Error was quantified by bias and precision, defined as the average and standard deviation of the differences between tracking methods, respectively. A normal male volunteer was also imaged during clinical exams. Bias and precision along a single axis did not exceed 0.17 and 0.21 mm, respectively. Comparing kinematics, positional error was less than 0.48 mm and rotational error was less than 0.58°. For the volunteer, kinematics were reported as joint angles and bone-bone distance. These results demonstrate that dual fluoroscopy and model-based tracking can accurately measure hip kinematics in living subjects during clinical exams of the hip.
Type Text
Publisher Human Kinetics Publishers, Inc.
Volume 30
Issue 3
First Page 461
Last Page 470
Language eng
Bibliographic Citation Kapron, A. L., Aoki, S. K., Peters, C. L., Maas, S. A., Bey, M. J., Zauel, R., & Anderson, A. E. (2014). Accuracy and feasibility of dual fluoroscopy and model-based tracking to quantify in vivo hip kinematics during clinical exams. Journal of Applied Biomechanics, 30(3), 461-70.
Rights Management (c) Human Kinetics Publishers, Inc.
Format Medium application/pdf
Format Extent 2,919,991 bytes
Identifier uspace,18981
ARK ark:/87278/s63b9886
Setname ir_uspace
Date Created 2014-10-17
Date Modified 2014-10-17
ID 712695
Reference URL https://collections.lib.utah.edu/ark:/87278/s63b9886
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