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- W2898815300 abstract "Successful component alignment is a major metric of success in total knee arthroplasty. Component translational placement, however, is less well reported despite being shown to affect patient outcomes. CT scans and planar X-rays are routinely used to report alignment but do not report measurements as precisely or accurately as modern navigation systems can deliver, or with reference to the pre-operative anatomy. A method is presented here that utilises a CT scan obtained for pre-operative planning and a post-operative CT scan for analysis to recreate a computation model of the knee with patient-specific axes. This model is then used to determine the post-operative component position in 3D space. Two subjects were investigated for reproducibility producing 12 sets of results. The maximum error using this technique was 0.9° ± 0.6° in rotation and 0.5 mm ± 0.3 mm in translation. Eleven subjects were investigated for reliability producing 22 sets of results. The intra-class correlation coefficient for each of the three axes of rotation and three primary resection planes was > 0.93 indicating excellent reliability. Routine use of this analysis will allow surgeons and engineers to better understand the effect of component alignment as well as the placement on outcome." @default.
- W2898815300 created "2018-11-09" @default.
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- W2898815300 date "2018-10-30" @default.
- W2898815300 modified "2023-10-14" @default.
- W2898815300 title "Accurate determination of post-operative 3D component positioning in total knee arthroplasty: the AURORA protocol" @default.
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- W2898815300 doi "https://doi.org/10.1186/s13018-018-0957-0" @default.
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