Accuracy of one-dimensional templating on linear EOS radiography allows template-directed instrumentation in total knee arthroplasty

Abstract Background Templating for total knee arthroplasty (TKA) is routinely performed on two-dimensional standard X-ray images and allows template-directed instrumentation. To date, there is no report on one-dimensional (1D) anteroposterior (AP) templating not requiring specific templating softwar...

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Autores principales:	Michael Andreas Finsterwald, Salar Sobhi, Senthuren Isaac, Penelope Scott, Riaz J. K. Khan, Daniel P. Fick
Formato:	article
Lenguaje:	EN
Publicado:	BMC 2021
Materias:	Template-directed instrumentation Total knee arthroplasty Total knee replacement One-dimensional templating Tray reduction Cost reduction Orthopedic surgery RD701-811 Diseases of the musculoskeletal system RC925-935
Acceso en línea:	https://doaj.org/article/fdfb51fe80b94b36b80cb9ea1e157af8
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spelling	oai:doaj.org-article:fdfb51fe80b94b36b80cb9ea1e157af82021-11-14T12:29:38ZAccuracy of one-dimensional templating on linear EOS radiography allows template-directed instrumentation in total knee arthroplasty10.1186/s13018-021-02812-91749-799Xhttps://doaj.org/article/fdfb51fe80b94b36b80cb9ea1e157af82021-11-01T00:00:00Zhttps://doi.org/10.1186/s13018-021-02812-9https://doaj.org/toc/1749-799XAbstract Background Templating for total knee arthroplasty (TKA) is routinely performed on two-dimensional standard X-ray images and allows template-directed instrumentation. To date, there is no report on one-dimensional (1D) anteroposterior (AP) templating not requiring specific templating software. We aim to describe a novel technique and explore its reliability, accuracy and potential cost-savings. Methods We investigated a consecutive series of TKAs at one institution between January and July 2019. Patients with preoperative low-dose linear AP EOS radiography images were included. Implant component sizes were retrospectively templated on the AP view with the hospitals imaging viewing software by two observers who were blinded to the definitive implant size. Planning accuracy as well as inter- and intra-observer reliability was calculated. Cost-savings were estimated based on the reduction of trays indicated by the 1D templating size estimations. Results A total of 141 consecutive TKAs in 113 patients were included. Accuracy of 1D templating was as follows: exact match in 53% femoral and 63% tibial components, within one size in 96% femoral and 98% tibial components. Overall 58% of TKA components were planned correctly and 97% within one size. Inter- and intra-rater reliability was good (κ = 0.66) and very good (κ = 0.82), respectively. This templating process can reduce instrumentation from six to three trays per case and therefore halve sterilisation costs. Conclusions The new 1D templating method using EOS AP imaging predicts component sizes in TKA within one size 97% of the time and can halve the number of instrumentation trays and sterilisation costs.Michael Andreas FinsterwaldSalar SobhiSenthuren IsaacPenelope ScottRiaz J. K. KhanDaniel P. FickBMCarticleTemplate-directed instrumentationTotal knee arthroplastyTotal knee replacementOne-dimensional templatingTray reductionCost reductionOrthopedic surgeryRD701-811Diseases of the musculoskeletal systemRC925-935ENJournal of Orthopaedic Surgery and Research, Vol 16, Iss 1, Pp 1-7 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Template-directed instrumentation Total knee arthroplasty Total knee replacement One-dimensional templating Tray reduction Cost reduction Orthopedic surgery RD701-811 Diseases of the musculoskeletal system RC925-935
spellingShingle	Template-directed instrumentation Total knee arthroplasty Total knee replacement One-dimensional templating Tray reduction Cost reduction Orthopedic surgery RD701-811 Diseases of the musculoskeletal system RC925-935 Michael Andreas Finsterwald Salar Sobhi Senthuren Isaac Penelope Scott Riaz J. K. Khan Daniel P. Fick Accuracy of one-dimensional templating on linear EOS radiography allows template-directed instrumentation in total knee arthroplasty
description	Abstract Background Templating for total knee arthroplasty (TKA) is routinely performed on two-dimensional standard X-ray images and allows template-directed instrumentation. To date, there is no report on one-dimensional (1D) anteroposterior (AP) templating not requiring specific templating software. We aim to describe a novel technique and explore its reliability, accuracy and potential cost-savings. Methods We investigated a consecutive series of TKAs at one institution between January and July 2019. Patients with preoperative low-dose linear AP EOS radiography images were included. Implant component sizes were retrospectively templated on the AP view with the hospitals imaging viewing software by two observers who were blinded to the definitive implant size. Planning accuracy as well as inter- and intra-observer reliability was calculated. Cost-savings were estimated based on the reduction of trays indicated by the 1D templating size estimations. Results A total of 141 consecutive TKAs in 113 patients were included. Accuracy of 1D templating was as follows: exact match in 53% femoral and 63% tibial components, within one size in 96% femoral and 98% tibial components. Overall 58% of TKA components were planned correctly and 97% within one size. Inter- and intra-rater reliability was good (κ = 0.66) and very good (κ = 0.82), respectively. This templating process can reduce instrumentation from six to three trays per case and therefore halve sterilisation costs. Conclusions The new 1D templating method using EOS AP imaging predicts component sizes in TKA within one size 97% of the time and can halve the number of instrumentation trays and sterilisation costs.
format	article
author	Michael Andreas Finsterwald Salar Sobhi Senthuren Isaac Penelope Scott Riaz J. K. Khan Daniel P. Fick
author_facet	Michael Andreas Finsterwald Salar Sobhi Senthuren Isaac Penelope Scott Riaz J. K. Khan Daniel P. Fick
author_sort	Michael Andreas Finsterwald
title	Accuracy of one-dimensional templating on linear EOS radiography allows template-directed instrumentation in total knee arthroplasty
title_short	Accuracy of one-dimensional templating on linear EOS radiography allows template-directed instrumentation in total knee arthroplasty
title_full	Accuracy of one-dimensional templating on linear EOS radiography allows template-directed instrumentation in total knee arthroplasty
title_fullStr	Accuracy of one-dimensional templating on linear EOS radiography allows template-directed instrumentation in total knee arthroplasty
title_full_unstemmed	Accuracy of one-dimensional templating on linear EOS radiography allows template-directed instrumentation in total knee arthroplasty
title_sort	accuracy of one-dimensional templating on linear eos radiography allows template-directed instrumentation in total knee arthroplasty
publisher	BMC
publishDate	2021
url	https://doaj.org/article/fdfb51fe80b94b36b80cb9ea1e157af8
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Accuracy of one-dimensional templating on linear EOS radiography allows template-directed instrumentation in total knee arthroplasty

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