3D analysis of total knee arthroplasty using 2D-3D medical image registration

Title
3D analysis of total knee arthroplasty using 2D-3D medical image registration
Authors
김영준김강일이건우
Issue Date
2010-02
Publisher
CMBBE2010
Abstract
3D postoperative analysis of total knee arthroplasty (TKA) is a method of evaluating TKA surgeries based on the 3D information on patients’ lower limb bones and inserted artificial knee implants. First, the 3D positions of individual knee bones and implants are obtained through 2D-3D medical image registrations. The 2D-3D registration of this study consists of works to align (1) 2D X-ray images captured from two orthogonal directions after the surgeries and (2) preoperatively prepared 3D geometrical models of bones and artificial knee implants. To this end, a method of calibrating dual X-ray imaging systems was designed, and a practical registration method was implemented. After 3D positions of four models related to the TKA (femur, tibia, femoral and tibial implant components) are calculated, various quantitative evaluations are performed. The following 3D postoperative TKA analysis methods are presented: automatic calculation of relative angles of implants and bone models, analysis of external rotation angles of inserted implants, and analysis of flexion-extension gaps. The repeatability and accuracy of 2D-3D registrations were reported, and analyses of the data from five patients who actually underwent TKA surgeries were performed.
URI
http://pubs.kist.re.kr/handle/201004/37879
Appears in Collections:
KIST Publication > Conference Paper
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