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CC BY-NC-ND 4.0 · Rev Bras Ortop (Sao Paulo) 2021; 56(06): 741-746
DOI: 10.1055/s-0040-1721838
Artigo Original
Ombro e Cotovelo

To Retain or Resurface the Patella in Primary Total Knee Arthroplasty: A Comparative Study

Article in several languages: português | English
Larry Rodrigues De Campos Júnior 
1   Serviço de Ortopedia e Traumatologia, Hospital São Vicente de Paulo, Passo Fundo, RS, Brasil
,
Guilherme Norberto Sbalqueiro 
1   Serviço de Ortopedia e Traumatologia, Hospital São Vicente de Paulo, Passo Fundo, RS, Brasil
,
Ruben Amancio Rojas Ayala 
1   Serviço de Ortopedia e Traumatologia, Hospital São Vicente de Paulo, Passo Fundo, RS, Brasil
,
Osmar Valadão Lopes Junior 
1   Serviço de Ortopedia e Traumatologia, Hospital São Vicente de Paulo, Passo Fundo, RS, Brasil
2   Serviço de Cirurgia do Joelho, Hospital São Vicente de Paulo, Passo Fundo, RS, Brasil
,
Paulo Renato Fernandes Saggin 
1   Serviço de Ortopedia e Traumatologia, Hospital São Vicente de Paulo, Passo Fundo, RS, Brasil
2   Serviço de Cirurgia do Joelho, Hospital São Vicente de Paulo, Passo Fundo, RS, Brasil
,
Andre Kuhn
1   Serviço de Ortopedia e Traumatologia, Hospital São Vicente de Paulo, Passo Fundo, RS, Brasil
2   Serviço de Cirurgia do Joelho, Hospital São Vicente de Paulo, Passo Fundo, RS, Brasil
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Abstract

Objective To evaluate and compare clinically and functionally patients undergoing primary total knee arthroplasty (TKA) with preservation or replacement of the patella.

Methods In a cross-sectional study, the functional results were evaluated and compared, using the Western Ontario and McMaster Universities (WOMAC) and Lequesne scores, of 158 patients undergoing primary TKA (162 knees); in 81 knees the patella was submitted to arthroplasty and in 81 the joint surface of the patella was preserved.

Results No significant differences were identified in terms of the Lequesne score (p = 0.585), global WOMAC score (p = 0.169), nor in terms of its subdivisions regarding stiffness (p = 0.796) and functional capacity (p = 0.190). There was a significant difference only in terms of the subdivision that evaluates pain in the WOMAC score, being lower in the group undergoing patellar arthroplasty (p = 0.036).

Conclusion In the present study, there was no difference in functional assessment in patients who underwent or not patellar replacement during primary knee arthroplasty surgery. However, individuals in whom the patella was preserved reported more pain.

Keywords

arthroplasty, replacement, knee - osteoarthritis, knee - patella


Publication History

Received: 19 April 2020

Accepted: 19 September 2020

Article published online:
31 March 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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