Range of motion and functional results in three different designs of total knee arthroplasty.

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Juan Pablo Bonifacio
Matias Costa Paz
Carlos Heraldo Yacuzzi
Lisandro Carbo

Abstract

Background: The purpose of this comparative study was to analyze functional results and the range of motion of the knee between two groups of patients with total knee arthroplasty using high-flex prosthesis (in two group) and one group using  conventional desing.Methods:  64 patients were surgically treated with total knee arthroplasty with Zimmer NexGen®,  and 34 patients were surgically treated with high flexión Optetrack® artrhoplasty. After exclusion of patients,  22 patients (group A) were treated with high-flex design Zimmer, 21 patients (group B)  were treated with a  conven­tional implant, 25 patients (Group C)  with high flex PS Optetrack® arthroplasty.  Maximum flexion and extension were evaluated before and after surgery. Functional evaluation was performed with the Knee Society Score , the Western Ontario and McMaster Universities osteoarthritis index , and an analogous visual scale.Results:  Mean post-surgical maximum flexion in group A increased from 99° to 113º with an average increase of 14º, in group B from 106° to 118º with an average gain of 12º, and in the group C from 110 to 111° with an avarege increase of 1°.  Functional results assessed with KSS and WOMAC showed improvements in all three groups Conclusion: The funtional and radiographic outcomes were favorable in the three desings artrhoplasty. This study suggests that there are no signi­ficant differences in the final flexion, KSS score and the funtional womac socre between the first tow desings, however together are significant superior to the third group after one year of follow up. 

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How to Cite
Bonifacio, J. P., Costa Paz, M., Yacuzzi, C. H., & Carbo, L. (2016). Range of motion and functional results in three different designs of total knee arthroplasty. Revista De La Asociación Argentina De Ortopedia Y Traumatología, 81(4), 264-273. https://doi.org/10.15417/596
Section
Clinical Research
Author Biographies

Juan Pablo Bonifacio, Sector de Artroscopia y Prótesis de Rodilla Instituto de Ortopedia y Traumatología "Carlos E. Ottolenghi” Hospital Italiano de Buenos Aires

Medico TraumatologoMiembro Titular AAOTMedico Traumagologo Especialista en Rodilla Sanatorio Britanico Rosario

Matias Costa Paz, Sector de Artroscopia y Prótesis de Rodilla Instituto de Ortopedia y Traumatología "Carlos E. Ottolenghi” Hospital Italiano de Buenos Aires

Jefe del Departamento de Artroscopia de Rodilla Istituto de Ortopedia y Trumatología "Carlos E. Ottolengui"Hospital Italiano de Buenos Aires

Carlos Heraldo Yacuzzi, Sector de Artroscopia de Rodilla Instituto de Ortopedia y Traumatología "Carlos E. Ottolenghi” Hospital Italiano de Buenos Aires

Medico del  Departamento de Artroscopia de Rodilla Istituto de Ortopedia y Trumatología "Carlos E. Ottolengui"Hospital Italiano de Buenos Aires

Lisandro Carbo, Sector de Prótesis de Rodilla Instituto de Ortopedia y Traumatología "Carlos E. Ottolenghi” Hospital Italiano de Buenos Aires

Jefe del Departamento de Prótesis de Rodilla Istituto de Ortopedia y Trumatología "Carlos E. Ottolengui"Hospital Italiano de Buenos Aires

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