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In-vivo three-dimensional carpal bone kinematics during flexion–extension and radio–ulnar deviation of the wrist: Dynamic motion versus step-wise static wrist positions

Abstract An in-vivo approach to the measurement of three-dimensional motion patterns of carpal bones in the wrist may have future diagnostic applications, particularly for ligament injuries of the wrist. Static methods to measure carpal kinematics in-vivo only provide an approximation of the true ki...

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Published in:Journal of biomechanics 2009-12, Vol.42 (16), p.2664-2671
Main Authors: Foumani, M, Strackee, S.D, Jonges, R, Blankevoort, L, Zwinderman, A.H, Carelsen, B, Streekstra, G.J
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description Abstract An in-vivo approach to the measurement of three-dimensional motion patterns of carpal bones in the wrist may have future diagnostic applications, particularly for ligament injuries of the wrist. Static methods to measure carpal kinematics in-vivo only provide an approximation of the true kinematics of the carpal bones. This study is aimed at finding the difference between dynamically and statically acquired carpal kinematics. For eight healthy subjects, static and a dynamic measurements of the carpal kinematics were performed for a flexion–extension and a radio–ulnar deviation movement. Dynamic scans were acquired by using a four-dimensional X-ray imaging system during an imposed cyclic motion. To assess static kinematics of the wrists, three-dimensional rotational X-ray scans were acquired during step-wise flexion–extension and radio–ulnar deviation. The helical axis rotations and the rotation components. i.e. flexion–extension, radio–ulnar deviation and pro–supination were the primary parameters. Linear mixed model statistical analysis was used to determine the significance of the difference between the dynamically and statically acquired rotations of the carpal bones. Small and in most cases negligible differences were observed between the dynamic motion and the step-wise static motion of the carpal bones. The conclusion is that in the case of individuals without any pathology of the wrist, carpal kinematics can be studied either dynamically or statically. Further research is required to investigate the dynamic in-vivo carpal kinematics in patients with dynamic wrist problems.
doi_str_mv 10.1016/j.jbiomech.2009.08.016
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Static methods to measure carpal kinematics in-vivo only provide an approximation of the true kinematics of the carpal bones. This study is aimed at finding the difference between dynamically and statically acquired carpal kinematics. For eight healthy subjects, static and a dynamic measurements of the carpal kinematics were performed for a flexion–extension and a radio–ulnar deviation movement. Dynamic scans were acquired by using a four-dimensional X-ray imaging system during an imposed cyclic motion. To assess static kinematics of the wrists, three-dimensional rotational X-ray scans were acquired during step-wise flexion–extension and radio–ulnar deviation. The helical axis rotations and the rotation components. i.e. flexion–extension, radio–ulnar deviation and pro–supination were the primary parameters. Linear mixed model statistical analysis was used to determine the significance of the difference between the dynamically and statically acquired rotations of the carpal bones. Small and in most cases negligible differences were observed between the dynamic motion and the step-wise static motion of the carpal bones. The conclusion is that in the case of individuals without any pathology of the wrist, carpal kinematics can be studied either dynamically or statically. Further research is required to investigate the dynamic in-vivo carpal kinematics in patients with dynamic wrist problems.</abstract><cop>United States</cop><pub>Elsevier Ltd</pub><pmid>19748626</pmid><doi>10.1016/j.jbiomech.2009.08.016</doi><tpages>8</tpages></addata></record>
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subjects Carpal Bones - anatomy & histology
Carpal Bones - physiology
Carpal Joints - anatomy & histology
Carpal Joints - physiology
Carpal kinematics
Confidence intervals
Dynamic
Female
Four dimensional x-ray imaging
Humans
Imaging, Three-Dimensional - methods
Instability
Joint imaging
Kinematics
Male
Models, Anatomic
Models, Biological
Motion
Physical Medicine and Rehabilitation
Radius - anatomy & histology
Radius - physiology
Range of Motion, Articular - physiology
Reproducibility of Results
Sensitivity and Specificity
Static wrist positions
Ulna - anatomy & histology
Ulna - physiology
Wrist
Wrist Joint - anatomy & histology
Wrist Joint - physiology
Young Adult
title In-vivo three-dimensional carpal bone kinematics during flexion–extension and radio–ulnar deviation of the wrist: Dynamic motion versus step-wise static wrist positions
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