The effect of hamstring tightness on intraoperative extension gap in posterior stabilized total knee arthroplasty

Abstract This study aimed to determine the factors related to intraoperative extension gap (EG) in patients who underwent posterior-stabilized total knee arthroplasty (TKA). A total of 106 TKAs in 84 patients were retrospectively reviewed. Only patients who underwent the same method of bone resectio...

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Autores principales:	Byung Woo Cho, Hyuck Min Kwon, Koo Yeon Lee, Kwan Kyu Park, Ick Hwan Yang, Woo-Suk Lee
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/4bb28c3437cf4c9d9acdcf5728859852
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spelling	oai:doaj.org-article:4bb28c3437cf4c9d9acdcf57288598522021-12-02T12:09:26ZThe effect of hamstring tightness on intraoperative extension gap in posterior stabilized total knee arthroplasty10.1038/s41598-021-83221-02045-2322https://doaj.org/article/4bb28c3437cf4c9d9acdcf57288598522021-02-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-83221-0https://doaj.org/toc/2045-2322Abstract This study aimed to determine the factors related to intraoperative extension gap (EG) in patients who underwent posterior-stabilized total knee arthroplasty (TKA). A total of 106 TKAs in 84 patients were retrospectively reviewed. Only patients who underwent the same method of bone resection were included consecutively. Bilateral popliteal angle (BPA) was used as an indicator of hamstring tightness. EG and extension space angle were measured using an offset type tensor. The associations between patient variables and EG were analyzed using multivariable linear regression and Pearson's correlation coefficients. The average EG was 12.9 ± 2.1 mm, and the average extension space angle was 2.8° ± 3.2°. BPA was greater than flexion contracture in most cases (94.3%), and no difference was found in only six cases (5.7%). According to multivariable linear regression analysis which was conducted after modifying the BPA into a categorical variable by 5°, EG was correlated with BPA (p < 0.001). Pearson’s correlation coefficient between EG and BPA was − 0.674 (p < 0.001). No other factors were significantly correlated with intraoperative EG. The present study found that popliteal angle is a different entity from flexion contracture, and that it is a predictable factor for EG in osteoarthritis patients. Smaller BPAs led to larger EG in patients who underwent the same degree of bone resection.Byung Woo ChoHyuck Min KwonKoo Yeon LeeKwan Kyu ParkIck Hwan YangWoo-Suk LeeNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-8 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Byung Woo Cho Hyuck Min Kwon Koo Yeon Lee Kwan Kyu Park Ick Hwan Yang Woo-Suk Lee The effect of hamstring tightness on intraoperative extension gap in posterior stabilized total knee arthroplasty
description	Abstract This study aimed to determine the factors related to intraoperative extension gap (EG) in patients who underwent posterior-stabilized total knee arthroplasty (TKA). A total of 106 TKAs in 84 patients were retrospectively reviewed. Only patients who underwent the same method of bone resection were included consecutively. Bilateral popliteal angle (BPA) was used as an indicator of hamstring tightness. EG and extension space angle were measured using an offset type tensor. The associations between patient variables and EG were analyzed using multivariable linear regression and Pearson's correlation coefficients. The average EG was 12.9 ± 2.1 mm, and the average extension space angle was 2.8° ± 3.2°. BPA was greater than flexion contracture in most cases (94.3%), and no difference was found in only six cases (5.7%). According to multivariable linear regression analysis which was conducted after modifying the BPA into a categorical variable by 5°, EG was correlated with BPA (p < 0.001). Pearson’s correlation coefficient between EG and BPA was − 0.674 (p < 0.001). No other factors were significantly correlated with intraoperative EG. The present study found that popliteal angle is a different entity from flexion contracture, and that it is a predictable factor for EG in osteoarthritis patients. Smaller BPAs led to larger EG in patients who underwent the same degree of bone resection.
format	article
author	Byung Woo Cho Hyuck Min Kwon Koo Yeon Lee Kwan Kyu Park Ick Hwan Yang Woo-Suk Lee
author_facet	Byung Woo Cho Hyuck Min Kwon Koo Yeon Lee Kwan Kyu Park Ick Hwan Yang Woo-Suk Lee
author_sort	Byung Woo Cho
title	The effect of hamstring tightness on intraoperative extension gap in posterior stabilized total knee arthroplasty
title_short	The effect of hamstring tightness on intraoperative extension gap in posterior stabilized total knee arthroplasty
title_full	The effect of hamstring tightness on intraoperative extension gap in posterior stabilized total knee arthroplasty
title_fullStr	The effect of hamstring tightness on intraoperative extension gap in posterior stabilized total knee arthroplasty
title_full_unstemmed	The effect of hamstring tightness on intraoperative extension gap in posterior stabilized total knee arthroplasty
title_sort	effect of hamstring tightness on intraoperative extension gap in posterior stabilized total knee arthroplasty
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/4bb28c3437cf4c9d9acdcf5728859852
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The effect of hamstring tightness on intraoperative extension gap in posterior stabilized total knee arthroplasty

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