Influence of marker-selection method in radiostereometric analysis of total knee arthroplasty on tibial baseplate migration patterns: a secondary analysis of a randomized controlled trial with 5-year follow-up
Background and purpose: Different marker-selection methods are applied to represent implant and tibial segments in radiostereometric analysis (RSA) studies of total knee arthroplasty (TKA). Either a consistent set of markers throughout subsequent RSA examinations (“consistent-marker method”) is use...
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| Format: | Article |
| Language: | English |
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Medical Journals Sweden
2024-03-01
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| Series: | Acta Orthopaedica |
| Subjects: | |
| Online Access: | https://actaorthop.org/actao/article/view/40184 |
| _version_ | 1797249025544552448 |
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| author | Thies J N van der Lelij Lennard A Koster Perla J Marang-van de Mheen Sören Toksvig-Larsen Rob G H H Nelissen Bart L Kaptein |
| author_facet | Thies J N van der Lelij Lennard A Koster Perla J Marang-van de Mheen Sören Toksvig-Larsen Rob G H H Nelissen Bart L Kaptein |
| author_sort | Thies J N van der Lelij |
| collection | DOAJ |
| description |
Background and purpose: Different marker-selection methods are applied to represent implant and tibial segments in radiostereometric analysis (RSA) studies of total knee arthroplasty (TKA). Either a consistent set of markers throughout subsequent RSA examinations (“consistent-marker method”) is used or all available markers at each follow-up (“all-marker method”). The aim of this secondary analysis was to compare marker-selection methods on individual and group level TKA migration results.
Methods: Data from a randomized RSA study with 72 patients was included. Tibial baseplate migration was evaluated at 3 months, 1, 2, and 5 years postoperatively with both marker-selection methods. Additionally, migration was calculated using 5 fictive points, either plotted based on the consistent set of markers or all available markers.
Results: Migration could be calculated with both marker-selection methods for 248 examinations. The same prosthesis and bone markers (n = 136), different prosthesis markers (n = 71), different bone markers (n = 21), or different prosthesis and bone markers (n = 20) were used. The mean difference in maximum total point motion (MTPM) between all examinations was 0.02 mm, 95% confidence interval –0.26 to 0.31 mm. 5 implants were classified as continuously migrating with the consistent-marker method versus 6 implants (same 5 plus one additional implant) with the all-marker method. Using fictive points, fewer implants were classified as continuously migrating in both marker-selection methods. Differences between TKA groups in mean MTPM were comparable with both marker-selection methods, also when fictive points were used.
Conclusion: Estimated group differences in mean MTPM were similar between marker-selection methods, but individual migration results differed. The latter has implications when classifying implants for estimated risk of future loosening.
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| first_indexed | 2024-04-24T20:23:55Z |
| format | Article |
| id | doaj.art-9374fd0c1d5447ff92fd3cb2cdf8bdd7 |
| institution | Directory Open Access Journal |
| issn | 1745-3674 1745-3682 |
| language | English |
| last_indexed | 2024-04-24T20:23:55Z |
| publishDate | 2024-03-01 |
| publisher | Medical Journals Sweden |
| record_format | Article |
| series | Acta Orthopaedica |
| spelling | doaj.art-9374fd0c1d5447ff92fd3cb2cdf8bdd72024-03-22T06:51:13ZengMedical Journals SwedenActa Orthopaedica1745-36741745-36822024-03-019510.2340/17453674.2024.40184Influence of marker-selection method in radiostereometric analysis of total knee arthroplasty on tibial baseplate migration patterns: a secondary analysis of a randomized controlled trial with 5-year follow-upThies J N van der Lelij 0Lennard A Koster1Perla J Marang-van de Mheen2Sören Toksvig-Larsen3Rob G H H Nelissen4Bart L Kaptein5Department of Orthopaedics, Leiden University Medical Center, Leiden, The NetherlandsDepartment of Orthopaedics, Leiden University Medical Center, Leiden, The NetherlandsDepartment of Orthopaedics, Leiden University Medical Center, Leiden, The Netherlands; Safety & Security Science and Centre for Safety in Healthcare, Delft University of Technology, Delft, The NetherlandsDepartment of Orthopaedics, Hässleholm Hospital, Hässleholm, Sweden; Department of Clinical Sciences, Lund University, Lund, SwedenDepartment of Orthopaedics, Leiden University Medical Center, Leiden, The NetherlandsDepartment of Orthopaedics, Leiden University Medical Center, Leiden, The Netherlands Background and purpose: Different marker-selection methods are applied to represent implant and tibial segments in radiostereometric analysis (RSA) studies of total knee arthroplasty (TKA). Either a consistent set of markers throughout subsequent RSA examinations (“consistent-marker method”) is used or all available markers at each follow-up (“all-marker method”). The aim of this secondary analysis was to compare marker-selection methods on individual and group level TKA migration results. Methods: Data from a randomized RSA study with 72 patients was included. Tibial baseplate migration was evaluated at 3 months, 1, 2, and 5 years postoperatively with both marker-selection methods. Additionally, migration was calculated using 5 fictive points, either plotted based on the consistent set of markers or all available markers. Results: Migration could be calculated with both marker-selection methods for 248 examinations. The same prosthesis and bone markers (n = 136), different prosthesis markers (n = 71), different bone markers (n = 21), or different prosthesis and bone markers (n = 20) were used. The mean difference in maximum total point motion (MTPM) between all examinations was 0.02 mm, 95% confidence interval –0.26 to 0.31 mm. 5 implants were classified as continuously migrating with the consistent-marker method versus 6 implants (same 5 plus one additional implant) with the all-marker method. Using fictive points, fewer implants were classified as continuously migrating in both marker-selection methods. Differences between TKA groups in mean MTPM were comparable with both marker-selection methods, also when fictive points were used. Conclusion: Estimated group differences in mean MTPM were similar between marker-selection methods, but individual migration results differed. The latter has implications when classifying implants for estimated risk of future loosening. https://actaorthop.org/actao/article/view/40184ArthroplastyKneeLooseningMigrationRadiostereometric analysis |
| spellingShingle | Thies J N van der Lelij Lennard A Koster Perla J Marang-van de Mheen Sören Toksvig-Larsen Rob G H H Nelissen Bart L Kaptein Influence of marker-selection method in radiostereometric analysis of total knee arthroplasty on tibial baseplate migration patterns: a secondary analysis of a randomized controlled trial with 5-year follow-up Acta Orthopaedica Arthroplasty Knee Loosening Migration Radiostereometric analysis |
| title | Influence of marker-selection method in radiostereometric analysis of total knee arthroplasty on tibial baseplate migration patterns: a secondary analysis of a randomized controlled trial with 5-year follow-up |
| title_full | Influence of marker-selection method in radiostereometric analysis of total knee arthroplasty on tibial baseplate migration patterns: a secondary analysis of a randomized controlled trial with 5-year follow-up |
| title_fullStr | Influence of marker-selection method in radiostereometric analysis of total knee arthroplasty on tibial baseplate migration patterns: a secondary analysis of a randomized controlled trial with 5-year follow-up |
| title_full_unstemmed | Influence of marker-selection method in radiostereometric analysis of total knee arthroplasty on tibial baseplate migration patterns: a secondary analysis of a randomized controlled trial with 5-year follow-up |
| title_short | Influence of marker-selection method in radiostereometric analysis of total knee arthroplasty on tibial baseplate migration patterns: a secondary analysis of a randomized controlled trial with 5-year follow-up |
| title_sort | influence of marker selection method in radiostereometric analysis of total knee arthroplasty on tibial baseplate migration patterns a secondary analysis of a randomized controlled trial with 5 year follow up |
| topic | Arthroplasty Knee Loosening Migration Radiostereometric analysis |
| url | https://actaorthop.org/actao/article/view/40184 |
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