Errors in the Center and Angle of Rotation of a Joint: An Experimental Study Journal Articles

abstract

• The error sensitivity in the determination of center and angle of rotations of a body joint performing planar motion is studied. A simple experiment is described to measure the errors in these two kinematic parameters as functions of errors in the input coordinates of markers. The effect of varying the marker locations and the size of motion-step is also studied. The errors in the center of rotation are found to increase dramatically when the two markers subtend angles of about 0 deg or 180 deg and when the motion step size decreases to 1 deg or less. Similar results are found for errors in the angle of rotation which, in addition, increase with decrease in the radius of the markers.

authors

• Panjabi, MM
• Goel, VK
• Walter, Stephen
• Schick, S

status

• published 

publication date

• August 1, 1982

has subject area

• 0903 Biomedical Engineering (FoR)
• 0913 Mechanical Engineering (FoR)
• Biomechanical Phenomena (MeSH)
• Biomedical Engineering (Science Metrix)
• Humans (MeSH)
• Joints (MeSH)
• Models, Biological (MeSH)
• Movement (MeSH)

published in

• Journal of Biomechanical Engineering  Journal

keywords

• Biomechanical Phenomena
• Humans
• Joints
• Models, Biological
• Movement

Digital Object Identifier (DOI)

• 10.1115/1.3138354

PubMed ID

• 7120949

start page

• 232

end page

• 237

volume

• 104

issue

• 3