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Erschienen in:
2005 | OriginalPaper | Buchkapitel
Computer–Assisted Deformity Correction Using the Ilizarov Method
verfasst von : A. L. Simpson, B. Ma, D. P. Borschneck, R. E. Ellis
Erschienen in: Medical Image Computing and Computer-Assisted Intervention – MICCAI 2005
Verlag: Springer Berlin Heidelberg
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The Taylor spatial frame is a fixation device used to implement the Ilizarov method of bone deformity correction to gradually distract an osteotomized bone at regular intervals, according to a prescribed schedule. We improve the accuracy of Ilizarov’s method of osteogenesis by preoperatively planning the correction, intraoperatively measuring the location of the frame relative to the patient, and computing the final shape of the frame. In four of five tibial phantom experiments, we were able to achieve correction errors of less than 2 degrees of total rotation. We also demonstrate how registration uncertainty can be propagated through the planned transformation to visualize the range of possible correction outcomes. Our method is an improvement over an existing computer–assisted technique (Iyun
et al.
[3]) in that the surgeon has the same flexibility as in the conventional technique when fixating the frame to the patient.