A computer and image-assisted guidance system for radial head arthroplasty

Authors

Simon R. Deluce, Western University
Hannah Shannon, Western University
Emily A. Lalone, Western University
George S. Athwal, St. Joseph's Health Care London
Louis M. Ferreira, Western University
Graham J.W. King, St. Joseph's Health Care London
James A. Johnson, Western University

Document Type

Article

Publication Date

3-4-2018

Journal

Computer Methods in Biomechanics and Biomedical Engineering: Imaging and Visualization

First Page

204

Last Page

210

URL with Digital Object Identifier

10.1080/21681163.2016.1222311

Abstract

© 2016 Informa UK Limited, trading as Taylor & Francis Group. Accurately positioning components during radial head arthroplasty is difficult due to the complex shape of the radial head. The objective of this study was to develop a navigation system for patient-specific radial head implants using intra-operative surface-based registration techniques. Using an optical tracking system, an implant stem was navigated using real-time visualisation of the implant position and orientation (n = 8). Absolute positioning errors in the ML and AP directions were 0.8 ± 0.5 mm (and 1.1 ± 0.9°) and 0.8 ± 0.6 mm (and 1.2 ± 1.7°), respectively. Registration error was less than 1.0 mm. The current system is an important first step in the development of a computer-assisted system for implant navigation.