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Summary: Spotlights: A Robust Method for
Surface-Based Registration
in Orthopedic Surgery
B. Ma
R. E. Ellis
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D. Fleet
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Department of Computing and Information Science
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Department of Surgery
Queen's University at Kingston, Ontario, Canada
ABSTRACT
Fast, simple and effective registration methods are needed in a wide variety of computer-assisted
surgical procedures in which readily locatable anatomical landmarks are not available. Orthopedic
procedures about the knee, in particular, are adversely affected if the registration accuracy exceeds
about 1 mm in translation or about ¤¥ in rotation, and the proximal tibia and distal femur are typi-
cally devoid of small distinct features. Surface-based least-squares registration methods can be used,
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