Leg length measures appear inaccurate in the early phase following total hip arthroplasty

Abstract The aims of this study were to (1) assess reliability of leg length discrepancy (LLD) measurements at different anatomical landmarks, (2) longitudinally investigate LLD in patients within the first year following total hip arthroplasty (THA) and to (3) correlate changes in LLD with function...

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Autores principales:	Maria Anna Smolle, Stefan Franz Fischerauer, Michael Maier, Patrick Reinbacher, Jörg Friesenbichler, Paul Ruckenstuhl, Maria Grandesso, Andreas Leithner, Werner Maurer-Ertl
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/955de95bf4424b9c97a62640d3c18b42
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spelling	oai:doaj.org-article:955de95bf4424b9c97a62640d3c18b422021-12-05T12:13:47ZLeg length measures appear inaccurate in the early phase following total hip arthroplasty10.1038/s41598-021-02684-32045-2322https://doaj.org/article/955de95bf4424b9c97a62640d3c18b422021-12-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-02684-3https://doaj.org/toc/2045-2322Abstract The aims of this study were to (1) assess reliability of leg length discrepancy (LLD) measurements at different anatomical landmarks, (2) longitudinally investigate LLD in patients within the first year following total hip arthroplasty (THA) and to (3) correlate changes in LLD with functional outcome. Ninety-nine patients with short stem THA (53.3% males, mean age: 61.0 ± 8.1 years) were prospectively included. Upright pelvic anteroposterior (a.p.) radiographs taken at 6 timepoints (preoperatively, discharge, 6, 12, 24, 52 weeks postoperatively) were used to assess LLD at 5 anatomical landmarks (iliac crest, upper sacroiliac joint, lower sacroiliac joint, tear drop figure, greater trochanter). WOMAC and Harris Hip Score (HHS) were obtained preoperatively and at 6 and 52 weeks. LLD measures significantly increased in the initial phase following THA, from discharge to 6 weeks postoperatively and remained constant thereafter. Documentation of LLDs is dependent on measurement site: LLDs varied significantly between trochanter and iliac crest to tear drop figure (p < 0.001). Functional assessments did not correlate with the occurrence of LLDs [WOMAC (p = 0.252); HHS (p = 0.798)]. Radiographic assessment of LLD following THA may not be performed early postoperatively, as measurements appear to inaccurately reflect actual LLDs at this time, potentially due incomplete leg extension and/or inhibited weight-bearing.Maria Anna SmolleStefan Franz FischerauerMichael MaierPatrick ReinbacherJörg FriesenbichlerPaul RuckenstuhlMaria GrandessoAndreas LeithnerWerner Maurer-ErtlNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-9 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Maria Anna Smolle Stefan Franz Fischerauer Michael Maier Patrick Reinbacher Jörg Friesenbichler Paul Ruckenstuhl Maria Grandesso Andreas Leithner Werner Maurer-Ertl Leg length measures appear inaccurate in the early phase following total hip arthroplasty
description	Abstract The aims of this study were to (1) assess reliability of leg length discrepancy (LLD) measurements at different anatomical landmarks, (2) longitudinally investigate LLD in patients within the first year following total hip arthroplasty (THA) and to (3) correlate changes in LLD with functional outcome. Ninety-nine patients with short stem THA (53.3% males, mean age: 61.0 ± 8.1 years) were prospectively included. Upright pelvic anteroposterior (a.p.) radiographs taken at 6 timepoints (preoperatively, discharge, 6, 12, 24, 52 weeks postoperatively) were used to assess LLD at 5 anatomical landmarks (iliac crest, upper sacroiliac joint, lower sacroiliac joint, tear drop figure, greater trochanter). WOMAC and Harris Hip Score (HHS) were obtained preoperatively and at 6 and 52 weeks. LLD measures significantly increased in the initial phase following THA, from discharge to 6 weeks postoperatively and remained constant thereafter. Documentation of LLDs is dependent on measurement site: LLDs varied significantly between trochanter and iliac crest to tear drop figure (p < 0.001). Functional assessments did not correlate with the occurrence of LLDs [WOMAC (p = 0.252); HHS (p = 0.798)]. Radiographic assessment of LLD following THA may not be performed early postoperatively, as measurements appear to inaccurately reflect actual LLDs at this time, potentially due incomplete leg extension and/or inhibited weight-bearing.
format	article
author	Maria Anna Smolle Stefan Franz Fischerauer Michael Maier Patrick Reinbacher Jörg Friesenbichler Paul Ruckenstuhl Maria Grandesso Andreas Leithner Werner Maurer-Ertl
author_facet	Maria Anna Smolle Stefan Franz Fischerauer Michael Maier Patrick Reinbacher Jörg Friesenbichler Paul Ruckenstuhl Maria Grandesso Andreas Leithner Werner Maurer-Ertl
author_sort	Maria Anna Smolle
title	Leg length measures appear inaccurate in the early phase following total hip arthroplasty
title_short	Leg length measures appear inaccurate in the early phase following total hip arthroplasty
title_full	Leg length measures appear inaccurate in the early phase following total hip arthroplasty
title_fullStr	Leg length measures appear inaccurate in the early phase following total hip arthroplasty
title_full_unstemmed	Leg length measures appear inaccurate in the early phase following total hip arthroplasty
title_sort	leg length measures appear inaccurate in the early phase following total hip arthroplasty
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/955de95bf4424b9c97a62640d3c18b42
work_keys_str_mv	AT mariaannasmolle leglengthmeasuresappearinaccurateintheearlyphasefollowingtotalhiparthroplasty AT stefanfranzfischerauer leglengthmeasuresappearinaccurateintheearlyphasefollowingtotalhiparthroplasty AT michaelmaier leglengthmeasuresappearinaccurateintheearlyphasefollowingtotalhiparthroplasty AT patrickreinbacher leglengthmeasuresappearinaccurateintheearlyphasefollowingtotalhiparthroplasty AT jorgfriesenbichler leglengthmeasuresappearinaccurateintheearlyphasefollowingtotalhiparthroplasty AT paulruckenstuhl leglengthmeasuresappearinaccurateintheearlyphasefollowingtotalhiparthroplasty AT mariagrandesso leglengthmeasuresappearinaccurateintheearlyphasefollowingtotalhiparthroplasty AT andreasleithner leglengthmeasuresappearinaccurateintheearlyphasefollowingtotalhiparthroplasty AT wernermaurerertl leglengthmeasuresappearinaccurateintheearlyphasefollowingtotalhiparthroplasty
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Leg length measures appear inaccurate in the early phase following total hip arthroplasty

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