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Proceedings Paper

Visualization of 3D elbow kinematics using reconstructed bony surfaces
Author(s): Emily A. Lalone; Colin P. McDonald; Louis M. Ferreira; Terry M. Peters; Graham J. W. King; James A. Johnson
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Paper Abstract

An approach for direct visualization of continuous three-dimensional elbow kinematics using reconstructed surfaces has been developed. Simulation of valgus motion was achieved in five cadaveric specimens using an upper arm simulator. Direct visualization of the motion of the ulna and humerus at the ulnohumeral joint was obtained using a contact based registration technique. Employing fiducial markers, the rendered humerus and ulna were positioned according to the simulated motion. The specific aim of this study was to investigate the effect of radial head arthroplasty on restoring elbow joint stability after radial head excision. The position of the ulna and humerus was visualized for the intact elbow and following radial head excision and replacement. Visualization of the registered humerus/ulna indicated an increase in valgus angulation of the ulna with respect to the humerus after radial head excision. This increase in valgus angulation was restored to that of an elbow with a native radial head following radial head arthroplasty. These findings were consistent with previous studies investigating elbow joint stability following radial head excision and arthroplasty. The current technique was able to visualize a change in ulnar position in a single DoF. Using this approach, the coupled motion of ulna undergoing motion in all 6 degrees-of-freedom can also be visualized.

Paper Details

Date Published: 23 February 2010
PDF: 11 pages
Proc. SPIE 7625, Medical Imaging 2010: Visualization, Image-Guided Procedures, and Modeling, 76253G (23 February 2010); doi: 10.1117/12.844229
Show Author Affiliations
Emily A. Lalone, St. Joseph's Health Care London (Canada)
The Univ. of Western Ontario (Canada)
Colin P. McDonald, St. Joseph's Health Care London (Canada)
Louis M. Ferreira, St. Joseph's Health Care London (Canada)
The Univ. of Western Ontario (Canada)
Terry M. Peters, The Univ. of Western Ontario (Canada)
Graham J. W. King, St. Joseph's Health Care London (Canada)
The Univ. of Western Ontario (Canada)
James A. Johnson, St. Joseph's Health Care London (Canada)
The Univ. of Western Ontario (Canada)


Published in SPIE Proceedings Vol. 7625:
Medical Imaging 2010: Visualization, Image-Guided Procedures, and Modeling
Kenneth H. Wong; Michael I. Miga, Editor(s)

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