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CC BY-NC-ND 4.0 · Rev Bras Ortop (Sao Paulo) 2022; 57(05): 734-740
DOI: 10.1055/s-0041-1739465
Artigo Original
Joelho

Midterm Radiographic Results and Reoperations of Tantalum Trabecular Metal Cones in Knee Arthroplasties

Article in several languages: português | English
Sandra Tie Nishibe Minamoto 
1   Instituto Nacional de Traumatologia e Ortopedia, Rio de Janeiro, RJ, Brasil
,
Luís Felipe Tupinambá da Silva 
1   Instituto Nacional de Traumatologia e Ortopedia, Rio de Janeiro, RJ, Brasil
,
José Leonardo Rocha de Faria 
1   Instituto Nacional de Traumatologia e Ortopedia, Rio de Janeiro, RJ, Brasil
,
Hugo Alexandre de Araujo Barros Cobra 
1   Instituto Nacional de Traumatologia e Ortopedia, Rio de Janeiro, RJ, Brasil
,
Idemar Monteiro da Palma 
2   Hospital Rios D'Or da Rede D'Or São Luiz, Rio de Janeiro, RJ, Brasil
,
Alan de Paula Mozella 
1   Instituto Nacional de Traumatologia e Ortopedia, Rio de Janeiro, RJ, Brasil
› Author Affiliations

Source of Funding No financial support.
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Abstract

Objective The management of bone loss represents a challenge in revisions of total knee arthroplasty (rTKA) and in complex primary total knee arthroplasties (TKAs). The purpose of the present study was to evaluate the midterm outcomes (5-year minimum follow-up) of knee reconstructions with tantalum trabecular metal (TM) cones on bone defects Anderson Orthopaedics Research Institute (AORI) 2 and 3.

Materials and Methods A retrospective analysis of the medical records of patients operated on between July 2008 and November 2014 was performed, collecting the following data: age, gender, laterality, body mass index, etiology of arthrosis, comorbidities, AORI classification of bone defects, causes for revision, readmissions, reoperations, perioperative and postoperative complications, radiographic signs of osteointegration, and maintenance of the TM support.

Results A total of 11 patients with a mean follow-up of 7.28 years (standard deviation [SD] = 1.88; range = 5.12–10 years) was evaluated, with 1 patient operated upon for a primary arthroplasty, 6 for revision arthroplasties, and 4 for a second revision arthroplasty (re-revision).

There were complications with the surgical wound, injury to the extensor mechanism and loosening of the femoral component in three of the patients that led to the necessity of four procedures due to complications with the surgical wound, injury to the extensor mechanism and loosening of the femoral component. Radiological signs of osteointegration of the trabecular cones were observed in all patients. We did not observe migration of the TM cones or the prosthetic components in the sample.

Conclusion The tantalum metaphyseal cones were able to provide efficient structural support to prosthetic implants with radiographic signs of osteointegration in the medium term.

Keywords

arthroplasty, replacement, knee - osteointegration - knee prosthesis - biocompatible materials

Financial Support

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


* Study developed at the National Institute of Traumatology and Orthopedics, Rio de Janeiro, Brazil.




Publication History

Received: 01 April 2020

Accepted: 08 July 2021

Article published online:
20 June 2022

© 2022. 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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