Achieving coronal plane alignment in total knee arthroplasty through modified preoperative planning based on long-leg radiographs: a prospective study

Abstract Purpose This prospective study was undertaken to examine whether the desired coronal plane alignment of limb and prosthetic components in total knee arthroplasty (TKA) could be achieved precisely using conventional jig-based methods by modifying the preoperative planning of bone resection u...

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Autores principales:	Daria Singh, Kalpeshkumar C. Patel, Ragini D. Singh
Formato:	article
Lenguaje:	EN
Publicado:	SpringerOpen 2021
Materias:	Conventional TKA Preoperative planning True-alignment technique Orthopedic surgery RD701-811
Acceso en línea:	https://doaj.org/article/07e01eaca44f4fbe81ff26a750a59091
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spelling	oai:doaj.org-article:07e01eaca44f4fbe81ff26a750a590912021-11-08T10:57:53ZAchieving coronal plane alignment in total knee arthroplasty through modified preoperative planning based on long-leg radiographs: a prospective study10.1186/s40634-021-00418-y2197-1153https://doaj.org/article/07e01eaca44f4fbe81ff26a750a590912021-11-01T00:00:00Zhttps://doi.org/10.1186/s40634-021-00418-yhttps://doaj.org/toc/2197-1153Abstract Purpose This prospective study was undertaken to examine whether the desired coronal plane alignment of limb and prosthetic components in total knee arthroplasty (TKA) could be achieved precisely using conventional jig-based methods by modifying the preoperative planning of bone resection utilizing long-leg radiographs (LLRs). Methods The study included consecutive 245 TKA procedures. Pre- and postoperative radiological variables, i.e., the mechanical axis (hip-knee-ankle [HKA] axis), mechanical lateral distal femoral angle (mLDFA), and medial proximal tibial angle (MPTA), and their outliers were evaluated. Statistical analysis was performed using SPSS version 21.0. Results The mean postoperative HKA axis, mLDFA and MPTA was 179.80 ± 1.81° (p < 0.01; 95% CI: 8.09–9.67), 90.35 ± 1.54° (p < 0.01; 95% CI: 1.33–2.02), and 90.26 ± 1.25° (p < 0.01; 95% CI: 4.41–5.20), respectively. The postoperative HKA axis on the coronal plane was 180 ± 3° in 235 knees (95.92%, 4.08% outliers). Femoral and tibial components were implanted in an acceptable position, withing 90 ± 3° of the mechanical axis of the femur and tibia on the coronal plane in 238 (97.14%, 2.86% outliers) and 243 (99.18%, 0.8% outliers) knees, respectively. Conclusion Modified preoperative planning for TKA on LLRs is a reliable and consistent method to achieve the desired limb and component alignment on the coronal plane without adding financial or logistical costs. Level of evidence IIDaria SinghKalpeshkumar C. PatelRagini D. SinghSpringerOpenarticleConventional TKAPreoperative planningTrue-alignment techniqueOrthopedic surgeryRD701-811ENJournal of Experimental Orthopaedics, Vol 8, Iss 1, Pp 1-9 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Conventional TKA Preoperative planning True-alignment technique Orthopedic surgery RD701-811
spellingShingle	Conventional TKA Preoperative planning True-alignment technique Orthopedic surgery RD701-811 Daria Singh Kalpeshkumar C. Patel Ragini D. Singh Achieving coronal plane alignment in total knee arthroplasty through modified preoperative planning based on long-leg radiographs: a prospective study
description	Abstract Purpose This prospective study was undertaken to examine whether the desired coronal plane alignment of limb and prosthetic components in total knee arthroplasty (TKA) could be achieved precisely using conventional jig-based methods by modifying the preoperative planning of bone resection utilizing long-leg radiographs (LLRs). Methods The study included consecutive 245 TKA procedures. Pre- and postoperative radiological variables, i.e., the mechanical axis (hip-knee-ankle [HKA] axis), mechanical lateral distal femoral angle (mLDFA), and medial proximal tibial angle (MPTA), and their outliers were evaluated. Statistical analysis was performed using SPSS version 21.0. Results The mean postoperative HKA axis, mLDFA and MPTA was 179.80 ± 1.81° (p < 0.01; 95% CI: 8.09–9.67), 90.35 ± 1.54° (p < 0.01; 95% CI: 1.33–2.02), and 90.26 ± 1.25° (p < 0.01; 95% CI: 4.41–5.20), respectively. The postoperative HKA axis on the coronal plane was 180 ± 3° in 235 knees (95.92%, 4.08% outliers). Femoral and tibial components were implanted in an acceptable position, withing 90 ± 3° of the mechanical axis of the femur and tibia on the coronal plane in 238 (97.14%, 2.86% outliers) and 243 (99.18%, 0.8% outliers) knees, respectively. Conclusion Modified preoperative planning for TKA on LLRs is a reliable and consistent method to achieve the desired limb and component alignment on the coronal plane without adding financial or logistical costs. Level of evidence II
format	article
author	Daria Singh Kalpeshkumar C. Patel Ragini D. Singh
author_facet	Daria Singh Kalpeshkumar C. Patel Ragini D. Singh
author_sort	Daria Singh
title	Achieving coronal plane alignment in total knee arthroplasty through modified preoperative planning based on long-leg radiographs: a prospective study
title_short	Achieving coronal plane alignment in total knee arthroplasty through modified preoperative planning based on long-leg radiographs: a prospective study
title_full	Achieving coronal plane alignment in total knee arthroplasty through modified preoperative planning based on long-leg radiographs: a prospective study
title_fullStr	Achieving coronal plane alignment in total knee arthroplasty through modified preoperative planning based on long-leg radiographs: a prospective study
title_full_unstemmed	Achieving coronal plane alignment in total knee arthroplasty through modified preoperative planning based on long-leg radiographs: a prospective study
title_sort	achieving coronal plane alignment in total knee arthroplasty through modified preoperative planning based on long-leg radiographs: a prospective study
publisher	SpringerOpen
publishDate	2021
url	https://doaj.org/article/07e01eaca44f4fbe81ff26a750a59091
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Achieving coronal plane alignment in total knee arthroplasty through modified preoperative planning based on long-leg radiographs: a prospective study

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