Pooling data for primary total knee implants across national registries: is the same implant used in multiple registries and for the same patient group? An observational study
Background and purpose: Pooling data on the performance of total knee (TK) implants across registries is only possible if the same TK implant is used across multiple registries and if used in patients with similar characteristics. We assessed to what extent specific TK implants: (i) are used across...
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Medical Journals Sweden
2025-04-01
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| Series: | Acta Orthopaedica |
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| Online Access: | https://actaorthop.org/actao/article/view/43476 |
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| author | Lotje Hoogervorst Rob G H H Nelissen Liza van Steenbergen Alma B Pedersen Eskild Bendix Kristiansen Martin Lindberg-Larsen Marina Torre Enrico Ciminello Riccardo Valentini Alexander W Grimberg Yinan Wu Perla J Marang-van de Mheen |
| author_facet | Lotje Hoogervorst Rob G H H Nelissen Liza van Steenbergen Alma B Pedersen Eskild Bendix Kristiansen Martin Lindberg-Larsen Marina Torre Enrico Ciminello Riccardo Valentini Alexander W Grimberg Yinan Wu Perla J Marang-van de Mheen |
| author_sort | Lotje Hoogervorst |
| collection | DOAJ |
| description |
Background and purpose: Pooling data on the performance of total knee (TK) implants across registries is only possible if the same TK implant is used across multiple registries and if used in patients with similar characteristics. We assessed to what extent specific TK implants: (i) are used across multiple registries or only in a single registry; and (ii) differ in patient characteristics between registries.
Methods: All primary TK implants implanted between January 2020 and December 2021 in the Danish, Dutch, German, and Italian registries were included. We determined the number of registries using a specific TK implant (based on combined femoral-tibial component brand name and fixation/congruency/mobile bearing insert/patella usage). Patient characteristics (age/body mass index [BMI]/sex/diagnosis osteoarthritis) were compared across registries for TK implants used in ≥ 2 registries ≥ 100 times.
Results: 813 different TK implants (577,351 procedures) were used across the 4 registries, of which 53 TK implants (7%) were used in 1 registry (8,000 procedures). 760 different TK implants (569,351 procedures; 99%) were used in ≥ 2 registries of which 47 different TK implants (393,954 procedures; 68%) were used in ≥ 2 registries and ≥ 100 times. Statistically and clinically significant differences in age for the same TK implant across registries were observed for 29 TK implants (62%) and 3 TK implants (6%), respectively; for other characteristics these were for BMI 30 (64%) and 0 (0%) TK implants; for male proportion 23 (49%) and 17 (36%) TK implants; and for diagnosis of osteoarthritis 42 (89%) and 34 (72%) TK implants, respectively.
Conclusion: Most specific TK implants and TK procedures were used across multiple registries, but they were often used in patients with different characteristics. This has an impact on comparing implant performances between registries.
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| format | Article |
| id | doaj-art-511b529892cc4889a045309f574b0c5f |
| institution | DOAJ |
| issn | 1745-3674 1745-3682 |
| language | English |
| publishDate | 2025-04-01 |
| publisher | Medical Journals Sweden |
| record_format | Article |
| series | Acta Orthopaedica |
| spelling | doaj-art-511b529892cc4889a045309f574b0c5f2025-08-20T03:18:05ZengMedical Journals SwedenActa Orthopaedica1745-36741745-36822025-04-019610.2340/17453674.2025.43476Pooling data for primary total knee implants across national registries: is the same implant used in multiple registries and for the same patient group? An observational studyLotje Hoogervorst0https://orcid.org/0000-0001-5343-6965Rob G H H Nelissen1https://orcid.org/0000-0003-1228-4162Liza van Steenbergen2https://orcid.org/0000-0002-8141-842XAlma B Pedersen3https://orcid.org/0000-0002-3288-9401Eskild Bendix Kristiansen4Martin Lindberg-Larsen5https://orcid.org/0000-0002-4483-677XMarina Torre6https://orcid.org/0000-0003-3851-187XEnrico Ciminello7Riccardo Valentini8Alexander W Grimberg9https://orcid.org/0000-0001-8062-788XYinan Wu10Perla J Marang-van de Mheen11Department of Orthopaedics, Leiden University Medical Center, Leiden, the NetherlandsDepartment of Orthopaedics, Leiden University Medical Center, Leiden, the NetherlandsDutch Arthroplasty Register (LROI), ‘s- Hertogenbosch, the NetherlandsDepartment of Clinical Epidemiology, Aarhus University Hospital, Aarhus; Department of Clinical Medicine, Aarhus University, Aarhus, DenmarkDepartment of Clinical Epidemiology, Aarhus University Hospital, Aarhus, DenmarkThe Danish Knee Arthroplasty Register; Department of Orthopedic Surgery and Traumatology, Odense University Hospital, Odense, DenmarkItalian Implantable Prostheses Registry, Italian National Institute of Health, Rome, ItalyItalian Implantable Prostheses Registry, Italian National Institute of Health, Rome, ItalyItalian Implantable Prostheses Registry, Italian National Institute of Health, Rome, ItalyGerman Arthroplasty Registry – EPRD, Berlin, GermanyGerman Arthroplasty Registry – EPRD, Berlin, GermanyDepartment of Orthopaedics, Leiden University Medical Center, Leiden; Safety & Security Science and Centre for Safety in Healthcare, Delft University of Technology, Delft, the Netherlands Background and purpose: Pooling data on the performance of total knee (TK) implants across registries is only possible if the same TK implant is used across multiple registries and if used in patients with similar characteristics. We assessed to what extent specific TK implants: (i) are used across multiple registries or only in a single registry; and (ii) differ in patient characteristics between registries. Methods: All primary TK implants implanted between January 2020 and December 2021 in the Danish, Dutch, German, and Italian registries were included. We determined the number of registries using a specific TK implant (based on combined femoral-tibial component brand name and fixation/congruency/mobile bearing insert/patella usage). Patient characteristics (age/body mass index [BMI]/sex/diagnosis osteoarthritis) were compared across registries for TK implants used in ≥ 2 registries ≥ 100 times. Results: 813 different TK implants (577,351 procedures) were used across the 4 registries, of which 53 TK implants (7%) were used in 1 registry (8,000 procedures). 760 different TK implants (569,351 procedures; 99%) were used in ≥ 2 registries of which 47 different TK implants (393,954 procedures; 68%) were used in ≥ 2 registries and ≥ 100 times. Statistically and clinically significant differences in age for the same TK implant across registries were observed for 29 TK implants (62%) and 3 TK implants (6%), respectively; for other characteristics these were for BMI 30 (64%) and 0 (0%) TK implants; for male proportion 23 (49%) and 17 (36%) TK implants; and for diagnosis of osteoarthritis 42 (89%) and 34 (72%) TK implants, respectively. Conclusion: Most specific TK implants and TK procedures were used across multiple registries, but they were often used in patients with different characteristics. This has an impact on comparing implant performances between registries. https://actaorthop.org/actao/article/view/43476ImplantsKnee |
| spellingShingle | Lotje Hoogervorst Rob G H H Nelissen Liza van Steenbergen Alma B Pedersen Eskild Bendix Kristiansen Martin Lindberg-Larsen Marina Torre Enrico Ciminello Riccardo Valentini Alexander W Grimberg Yinan Wu Perla J Marang-van de Mheen Pooling data for primary total knee implants across national registries: is the same implant used in multiple registries and for the same patient group? An observational study Acta Orthopaedica Implants Knee |
| title | Pooling data for primary total knee implants across national registries: is the same implant used in multiple registries and for the same patient group? An observational study |
| title_full | Pooling data for primary total knee implants across national registries: is the same implant used in multiple registries and for the same patient group? An observational study |
| title_fullStr | Pooling data for primary total knee implants across national registries: is the same implant used in multiple registries and for the same patient group? An observational study |
| title_full_unstemmed | Pooling data for primary total knee implants across national registries: is the same implant used in multiple registries and for the same patient group? An observational study |
| title_short | Pooling data for primary total knee implants across national registries: is the same implant used in multiple registries and for the same patient group? An observational study |
| title_sort | pooling data for primary total knee implants across national registries is the same implant used in multiple registries and for the same patient group an observational study |
| topic | Implants Knee |
| url | https://actaorthop.org/actao/article/view/43476 |
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