Implantation of the patellar component in the total arthroplasty of the knee: current situation

Sánchez-Márquez, J.M.; Rodríguez-Merchán, E.C.

doi:10.1016/S1988-8856(10)70231-5

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Abstract

Introduction

Implanting or not implanting the patellar component (PC) in knee prosthesis (TKP) is a controversial subject.

Material and method

In an attempt to clarify this controversy, we have reviewed grade 1 and 2 scientific evidence articles.

Results

The percentage of anterior knee pain without PC ranges from 17% to 69% versus 5.3-37% when the PC is placed. Without PC, the percentage of reoperation goes from 0% to 20%, this being from 0% to 13% when the PC is implanted. A prospective study has demonstrated that the Outerbridge classification serves to decide on whether to perform a PC implant or not.

Conclusions

The controversial is still unsolved. For some authors, it is better to always place a PC. However, others state that it is not necessary to do so in Outerbridge grades I, II and III, being recommendable to do so in grade IV.

Keywords:

Knee

Arthroplasty

Patellar component

Resumen

Introducción

Implantar o no el componente rotuliano (CR) en prótesis de rodilla es un tema controvertido.

Material y método

Para intentar clarificar esta controversia hemos revisado artículos de evidencia científica grados 1 y 2.

Resultados

Sin CR, el porcentaje de dolor anterior de rodilla oscila entre 17-69% frente al 5,3-37% cuando se coloca el CR. Sin CR, el porcentaje de reoperación va de 0-20%, y es de 0-13% cuando se implanta el CR. Un estudio prospectivo ha demostrado que la clasificación de Outerbridge sirve para decidir si implantar o no el CR.

Conclusiones

La controversia sigue sin estar resuelta. Para algunos autores es mejor colocar siempre el CR. Sin embargo, otros señalan que no es necesario colocar el CR en los grados I, II y III de Outerbridge, y es aconsejable hacerlo en los grados IV.

Palabras clave:

Rodilla

Artroplastia

Componente rotuliano

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