T. Shimoto, H. Higaki, T. Fukunaga, S. Yasutake, Y. Nakanishi, H. Miura, T. Mawatari, and Y. Iwamoto
Orthopaedics, Joint Replacement, Image Matching, FlatPanel Detector
In vivo analysis of the 3-D kinematics of total knee ar throplasty (TKA) is expected as one of the important technique for design of the artificial knee joint in future generation. This study was aimed to develop a 3-D mo tion analysis with high precision by using image match ing (IM) technique with wide-spreading high-resolutional flat panel detector (FPD). The full six degrees of free dom (DOF) motion of the prosthetic component were experimentally found by matching computer-synthesized projection images with the 2-D FPD images. The IM be tween each computer-synthesized image and actual per spective image was automatically processed in order to minimize the exclusive OR (XOR) of the pixels. Fur ther, some objective windows were set up on the image to reduce a calculating time. The accuracy of the motion analysis method for TKA was confirmed using some X ray images taken experimentally.
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