Cargando…

Accuracy of a patient-specific instrumentation for coronal plane alignment of an anatomic alignment total knee arthroplasty system: A radiographic study

BACKGROUND: Patient-individualised anatomic alignment in total knee arthroplasty (TKA) requires exact positioning of the tibial and femoral components. Patient-specific instrumentation (PSI) may be advantageous for implantation. However, the role of PSI in the instrumentation of such knee designs ha...

Descripción completa

Detalles Bibliográficos
Autores principales: Müller, Konstantin, Lerch, Solveig, Sauer, Bernd, Lerch, Matthias
Formato: Online Artículo Texto
Lenguaje:English
Publicado: IOS Press 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9697061/
https://www.ncbi.nlm.nih.gov/pubmed/35599510
http://dx.doi.org/10.3233/THC-213507
_version_ 1784838466214821888
author Müller, Konstantin
Lerch, Solveig
Sauer, Bernd
Lerch, Matthias
author_facet Müller, Konstantin
Lerch, Solveig
Sauer, Bernd
Lerch, Matthias
author_sort Müller, Konstantin
collection PubMed
description BACKGROUND: Patient-individualised anatomic alignment in total knee arthroplasty (TKA) requires exact positioning of the tibial and femoral components. Patient-specific instrumentation (PSI) may be advantageous for implantation. However, the role of PSI in the instrumentation of such knee designs has not been investigated. OBJECTIVE: The aim of this study was to investigate the accuracy of a PSI system designed for patient-individualised anatomic alignment. METHODS: Fifty-four patients from a single centre were consecutively enrolled in this study. Patient-specific femoral and tibial cutting guides were manufactured using 3D models from computed tomography (CT) scans. All patients received an anatomic TKA implant design through an extension gap first technique. Postoperative radiography was taken, and implant component alignment and leg alignment were compared to the preoperative planning. RESULTS: Thirty-four patients were evaluable. Mean differences between planned angles values obtained from CT scans and the measured radiographic values were small and not significantly different from zero. CONCLUSIONS: Implantation of an anatomic knee design that allows individual component alignment using PSI is feasible. The percentage of component misalignment in the coronal plane was remarkably low. Whether this leads to clinical benefits requires further verification.
format Online
Article
Text
id pubmed-9697061
institution National Center for Biotechnology Information
language English
publishDate 2022
publisher IOS Press
record_format MEDLINE/PubMed
spelling pubmed-96970612022-12-08 Accuracy of a patient-specific instrumentation for coronal plane alignment of an anatomic alignment total knee arthroplasty system: A radiographic study Müller, Konstantin Lerch, Solveig Sauer, Bernd Lerch, Matthias Technol Health Care Research Article BACKGROUND: Patient-individualised anatomic alignment in total knee arthroplasty (TKA) requires exact positioning of the tibial and femoral components. Patient-specific instrumentation (PSI) may be advantageous for implantation. However, the role of PSI in the instrumentation of such knee designs has not been investigated. OBJECTIVE: The aim of this study was to investigate the accuracy of a PSI system designed for patient-individualised anatomic alignment. METHODS: Fifty-four patients from a single centre were consecutively enrolled in this study. Patient-specific femoral and tibial cutting guides were manufactured using 3D models from computed tomography (CT) scans. All patients received an anatomic TKA implant design through an extension gap first technique. Postoperative radiography was taken, and implant component alignment and leg alignment were compared to the preoperative planning. RESULTS: Thirty-four patients were evaluable. Mean differences between planned angles values obtained from CT scans and the measured radiographic values were small and not significantly different from zero. CONCLUSIONS: Implantation of an anatomic knee design that allows individual component alignment using PSI is feasible. The percentage of component misalignment in the coronal plane was remarkably low. Whether this leads to clinical benefits requires further verification. IOS Press 2022-11-12 /pmc/articles/PMC9697061/ /pubmed/35599510 http://dx.doi.org/10.3233/THC-213507 Text en © 2022 – The authors. Published by IOS Press. https://creativecommons.org/licenses/by-nc/4.0/This is an open access article distributed under the terms of the Creative Commons Attribution Non-Commercial (CC BY-NC 4.0) License (https://creativecommons.org/licenses/by-nc/4.0/) , which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Research Article
Müller, Konstantin
Lerch, Solveig
Sauer, Bernd
Lerch, Matthias
Accuracy of a patient-specific instrumentation for coronal plane alignment of an anatomic alignment total knee arthroplasty system: A radiographic study
title Accuracy of a patient-specific instrumentation for coronal plane alignment of an anatomic alignment total knee arthroplasty system: A radiographic study
title_full Accuracy of a patient-specific instrumentation for coronal plane alignment of an anatomic alignment total knee arthroplasty system: A radiographic study
title_fullStr Accuracy of a patient-specific instrumentation for coronal plane alignment of an anatomic alignment total knee arthroplasty system: A radiographic study
title_full_unstemmed Accuracy of a patient-specific instrumentation for coronal plane alignment of an anatomic alignment total knee arthroplasty system: A radiographic study
title_short Accuracy of a patient-specific instrumentation for coronal plane alignment of an anatomic alignment total knee arthroplasty system: A radiographic study
title_sort accuracy of a patient-specific instrumentation for coronal plane alignment of an anatomic alignment total knee arthroplasty system: a radiographic study
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9697061/
https://www.ncbi.nlm.nih.gov/pubmed/35599510
http://dx.doi.org/10.3233/THC-213507
work_keys_str_mv AT mullerkonstantin accuracyofapatientspecificinstrumentationforcoronalplanealignmentofananatomicalignmenttotalkneearthroplastysystemaradiographicstudy
AT lerchsolveig accuracyofapatientspecificinstrumentationforcoronalplanealignmentofananatomicalignmenttotalkneearthroplastysystemaradiographicstudy
AT sauerbernd accuracyofapatientspecificinstrumentationforcoronalplanealignmentofananatomicalignmenttotalkneearthroplastysystemaradiographicstudy
AT lerchmatthias accuracyofapatientspecificinstrumentationforcoronalplanealignmentofananatomicalignmenttotalkneearthroplastysystemaradiographicstudy