Abstract
Imaging of poorly performing total knee replacements (TKR) is initially undertaken with conventional radiography. This modality has its limitations in terms of determining the component orientation and position. Computed tomography (CT) has since superseded conventional radiography for this purpose, particularly since the advent of three-dimensional computed tomography analysis software. This has allowed the precise and accurate measurement of TKR components in all six degrees of freedom and therefore has become the optimal measurement tool. Three-dimensional (3D) imaging software programmes are becoming more accessible and user friendly to the surgeon. Investigating the reasons for both early and late failure, the increased revision TKR burden, catastrophic implant failure and the need for robust tools for clinical research and the evaluation of the accuracy and precision of computer-assisted surgical tools have driven this development. In this chapter the pros and cons of different methods of measuring TKR component position are discussed.
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Holme, T.J., Hirschmann, M.T., Henckel, J. (2015). 29 Determination of Component Orientation and Position in Patients After Total Knee Replacement. In: Hirschmann, M., Becker, R. (eds) The Unhappy Total Knee Replacement. Springer, Cham. https://doi.org/10.1007/978-3-319-08099-4_35
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