A comparison of registration techniques for computer- and image-assisted elbow surgery

Colin P. Mcdonald Bioengineering Research Laboratory, The Hand and Upper Limb Centre, St. Joseph's Health Care London, Ontario; Departments of Biomedical Engineering; Imaging Research Laboratories, Robarts Research Institute, London, Ontario, Canada

James R. Brownhill Bioengineering Research Laboratory, The Hand and Upper Limb Centre, St. Joseph's Health Care London, Ontario; Departments of Biomedical Engineering

Graham J. W. King Bioengineering Research Laboratory, The Hand and Upper Limb Centre, St. Joseph's Health Care London, Ontario; Departments of Surgery; Departments of Medical Biophysics, The University of Western Ontario, London, Ontario

James A. Johnson Bioengineering Research Laboratory, The Hand and Upper Limb Centre, St. Joseph's Health Care London, Ontario; Departments of Biomedical Engineering; Departments of Surgery; Departments of Medical Biophysics, The University of Western Ontario, London, Ontario

Terry M. Peters Departments of Biomedical Engineering; Departments of Surgery; Imaging Research Laboratories, Robarts Research Institute, London, Ontario, CanadaCorrespondence[email protected]

Abstract

Optimal function following elbow replacement surgery is dependent on the accurate replication of the elbow's flexion-extension axis. Currently, position and orientation of the axis are estimated from visual landmarks. In order to develop computer-assisted techniques to more accurately define this axis, a surface-based registration technique employing a hand-held laser scanner was evaluated against a conventional paired-point registration method to determine whether it produced improved alignment of the flexion-extension axis of the elbow. Registration error was 0.8 ± 0.3 mm for surface-based registration, compared with 1.9 ± 1.0 mm for the conventional registration method. These results suggest that the implementation of a surface-based registration technique may lead to a more accurate axis determination and improved clinical outcomes following elbow replacement surgery.

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A comparison of registration techniques for computer- and image-assisted elbow surgery

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A comparison of registration techniques for computer- and image-assisted elbow surgery

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