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Patient-specific instrumentation for total knee arthroplasty improves reproducibility in the planned rotational positioning of the tibial component

BACKGROUND: The purpose of this study was to evaluate the reproducibility of planned component positioning including tibial rotational alignment in patient-specific instrumentation (PSI) for total knee arthroplasty (TKA). METHODS: A total of 100 knees of 100 patients underwent TKA using PSI (n = 50)...

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Autores principales: Sotozawa, Masaichi, Kumagai, Ken, Yamada, Shunsuke, Nejima, Shuntaro, Inaba, Yutaka
Formato: Online Artículo Texto
Lenguaje:English
Publicado: BioMed Central 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9446751/
https://www.ncbi.nlm.nih.gov/pubmed/36064582
http://dx.doi.org/10.1186/s13018-022-03298-9
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author Sotozawa, Masaichi
Kumagai, Ken
Yamada, Shunsuke
Nejima, Shuntaro
Inaba, Yutaka
author_facet Sotozawa, Masaichi
Kumagai, Ken
Yamada, Shunsuke
Nejima, Shuntaro
Inaba, Yutaka
author_sort Sotozawa, Masaichi
collection PubMed
description BACKGROUND: The purpose of this study was to evaluate the reproducibility of planned component positioning including tibial rotational alignment in patient-specific instrumentation (PSI) for total knee arthroplasty (TKA). METHODS: A total of 100 knees of 100 patients underwent TKA using PSI (n = 50) or the conventional method (n = 50). Full-length anteroposterior radiographs of the lower limb were taken in the standing position, and the coronal alignments of the femoral and tibial components were measured. Computed tomography (CT) images of the lower limb were obtained preoperatively and postoperatively, and the rotational alignments of the femoral and tibial components were measured. The difference from the preoperative planning in tibial rotational alignment was measured using three-dimensionally merged pre- and postoperative images. The mean values and rates of outliers in each measurement were compared between the PSI group and the conventional group. RESULTS: There were no significant differences in coronal alignment of the femoral and tibial components and rotational alignment of the femoral component between the two groups. With respect to rotational alignment of the tibial component from the preoperatively planned reference axis, the PSI group showed a lower rate of outliers (internal rotation > 10°) than the conventional group (p < 0.05). CONCLUSIONS: This study demonstrated that the difference from the preoperative planning in tibial rotational positioning was accurately evaluated using novel three-dimensional measurement method, and PSI could reduce outliers in rotational alignment of the tibial component (internal rotation > 10°). PSI is a useful technique for improving the reproducibility of the planned tibial rotational positioning in TKA.
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spelling pubmed-94467512022-09-07 Patient-specific instrumentation for total knee arthroplasty improves reproducibility in the planned rotational positioning of the tibial component Sotozawa, Masaichi Kumagai, Ken Yamada, Shunsuke Nejima, Shuntaro Inaba, Yutaka J Orthop Surg Res Research Article BACKGROUND: The purpose of this study was to evaluate the reproducibility of planned component positioning including tibial rotational alignment in patient-specific instrumentation (PSI) for total knee arthroplasty (TKA). METHODS: A total of 100 knees of 100 patients underwent TKA using PSI (n = 50) or the conventional method (n = 50). Full-length anteroposterior radiographs of the lower limb were taken in the standing position, and the coronal alignments of the femoral and tibial components were measured. Computed tomography (CT) images of the lower limb were obtained preoperatively and postoperatively, and the rotational alignments of the femoral and tibial components were measured. The difference from the preoperative planning in tibial rotational alignment was measured using three-dimensionally merged pre- and postoperative images. The mean values and rates of outliers in each measurement were compared between the PSI group and the conventional group. RESULTS: There were no significant differences in coronal alignment of the femoral and tibial components and rotational alignment of the femoral component between the two groups. With respect to rotational alignment of the tibial component from the preoperatively planned reference axis, the PSI group showed a lower rate of outliers (internal rotation > 10°) than the conventional group (p < 0.05). CONCLUSIONS: This study demonstrated that the difference from the preoperative planning in tibial rotational positioning was accurately evaluated using novel three-dimensional measurement method, and PSI could reduce outliers in rotational alignment of the tibial component (internal rotation > 10°). PSI is a useful technique for improving the reproducibility of the planned tibial rotational positioning in TKA. BioMed Central 2022-09-05 /pmc/articles/PMC9446751/ /pubmed/36064582 http://dx.doi.org/10.1186/s13018-022-03298-9 Text en © The Author(s) 2022 https://creativecommons.org/licenses/by/4.0/Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/ (https://creativecommons.org/publicdomain/zero/1.0/) ) applies to the data made available in this article, unless otherwise stated in a credit line to the data.
spellingShingle Research Article
Sotozawa, Masaichi
Kumagai, Ken
Yamada, Shunsuke
Nejima, Shuntaro
Inaba, Yutaka
Patient-specific instrumentation for total knee arthroplasty improves reproducibility in the planned rotational positioning of the tibial component
title Patient-specific instrumentation for total knee arthroplasty improves reproducibility in the planned rotational positioning of the tibial component
title_full Patient-specific instrumentation for total knee arthroplasty improves reproducibility in the planned rotational positioning of the tibial component
title_fullStr Patient-specific instrumentation for total knee arthroplasty improves reproducibility in the planned rotational positioning of the tibial component
title_full_unstemmed Patient-specific instrumentation for total knee arthroplasty improves reproducibility in the planned rotational positioning of the tibial component
title_short Patient-specific instrumentation for total knee arthroplasty improves reproducibility in the planned rotational positioning of the tibial component
title_sort patient-specific instrumentation for total knee arthroplasty improves reproducibility in the planned rotational positioning of the tibial component
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9446751/
https://www.ncbi.nlm.nih.gov/pubmed/36064582
http://dx.doi.org/10.1186/s13018-022-03298-9
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