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Proceedings Paper

Implant alignment in total elbow arthroplasty: conventional vs. navigated techniques
Author(s): Colin P. McDonald; James A. Johnson; Graham J. W. King; Terry M. Peters
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Paper Abstract

Incorrect selection of the native flexion-extension axis during implant alignment in elbow replacement surgery is likely a significant contributor to failure of the prosthesis. Computer and image-assisted surgery is emerging as a useful surgical tool in terms of improving the accuracy of orthopaedic procedures. This study evaluated the accuracy of implant alignment using an image-based navigation technique compared against a conventional non-navigated approach. Implant alignment error was 0.8 ± 0.3 mm in translation and 1.1 ± 0.4° in rotation for the navigated alignment, compared with 3.1 ± 1.3 mm and 5.0 ± 3.8° for the non-navigated alignment. Five (5) of the 11 non-navigated alignments were malaligned greater than 5° while none of the navigated alignments were placed with an error of greater than 2.0°. It is likely that improved implant positioning will lead to reduced implant loading and wear, resulting in fewer implantrelated complications and revision surgeries.

Paper Details

Date Published: 13 March 2009
PDF: 9 pages
Proc. SPIE 7261, Medical Imaging 2009: Visualization, Image-Guided Procedures, and Modeling, 726112 (13 March 2009); doi: 10.1117/12.813439
Show Author Affiliations
Colin P. McDonald, Hand and Upper Limb Ctr., St. Joseph's Health Care (Canada)
Robarts Research Institute, The Univ. of Western Ontario (Canada)
James A. Johnson, Hand and Upper Limb Ctr., St. Joseph's Health Care (Canada)
The Univ. of Western Ontario (Canada)
Graham J. W. King, Hand and Upper Limb Ctr., St. Joseph's Health Care (Canada)
The Univ. of Western Ontario (Canada)
Terry M. Peters, Robarts Research Institute, The Univ. of Western Ontario (Canada)


Published in SPIE Proceedings Vol. 7261:
Medical Imaging 2009: Visualization, Image-Guided Procedures, and Modeling
Michael I. Miga; Kenneth H. Wong, Editor(s)

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