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CC BY-NC-ND 4.0 · Rev Bras Ortop (Sao Paulo) 2021; 56(04): 513-516
DOI: 10.1055/s-0040-1721360
Artigo Original
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Measuring Acetabular Version after Total Hip Arthroplasty: A Comparison of Two Radiographic Methods[*]

Artikel in mehreren Sprachen: português | English
Afonso Cardoso 
1   Departamento de Ortopedia e Traumatologia, Hospital Beatriz Ângelo, Loures, Portugal
,
Mafalda Duarte
2   Faculdade de Medicina da Universidade de Lisboa, Lisboa, Portugal
,
Rui Viegas 
1   Departamento de Ortopedia e Traumatologia, Hospital Beatriz Ângelo, Loures, Portugal
,
Filipe Oliveira
1   Departamento de Ortopedia e Traumatologia, Hospital Beatriz Ângelo, Loures, Portugal
,
Pedro Pinto
1   Departamento de Ortopedia e Traumatologia, Hospital Beatriz Ângelo, Loures, Portugal
,
Paulo Rego 
1   Departamento de Ortopedia e Traumatologia, Hospital Beatriz Ângelo, Loures, Portugal
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Abstract

Objective The objective of the present work was to compare the measurement of acetabular component version on anteroposterior (AP) and on cross-table radiographs after total hip arthroplasty (THA).

Methods Radiographs of 60 hips with a primary THA were selected. Version was calculated on the AP radiograph using the Lewinnek method and, on the cross-table, using the Woo and Morrey direct method.

Results Mean and standard deviation (SD) were different on both radiographs, being 9.7° ± 5.5° on the AP, whereas in the cross-table the measurements were 20.6° ± 8.4° (p < 0.001). Minding our aim of 10°, the cross-table measurements were statistically different from it (p < 0.001), while the AP measurement did not differ (p = 0.716).

Conclusion The present study showed that the best way to correctly evaluate the acetabular component positioning following a THA is by measuring anteversion and abduction on an AP radiograph after confirming, in a cross-table radiograph, that the component is not retroverted.

Keywords

arthroplasty, replacement, hip - acetabulum - radiography

Financial Support

There was no financial support from public, commercial, or non-profit sources.


* Work developed at the Department of Orthopedics and Traumatology, Hospital Beatriz Ângelo, Loures, Portugal.




Publikationsverlauf

Eingereicht: 10. März 2020

Angenommen: 16. September 2020

Artikel online veröffentlicht:
22. März 2021

© 2021. Sociedade Brasileira de Ortopedia e Traumatologia. This is an open access article published by Thieme under the terms of the Creative Commons Attribution-NonDerivative-NonCommercial License, permitting copying and reproduction so long as the original work is given appropriate credit. Contents may not be used for commecial purposes, or adapted, remixed, transformed or built upon. (https://creativecommons.org/licenses/by-nc-nd/4.0/)

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