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01.12.2015 | Research article | Ausgabe 1/2015 Open Access

BMC Musculoskeletal Disorders 1/2015

Revision TKA with a condylar constrained prosthesis using metaphyseal and surface cementation: a minimum 6-year follow-up analysis

Zeitschrift:
BMC Musculoskeletal Disorders > Ausgabe 1/2015
Autoren:
Pablo Sanz-Ruiz, Manuel Villanueva-Martínez, Jose Antonio Matas-Diez, Javier Vaquero-Martín
Wichtige Hinweise

Competing interests

The authors declare that they have no competing interests.

Authors’ contributions

PSR wrote the manuscript, collected the data, examined the patients, evaluated the radiology findings, and performed the statistical analysis. MVM and JV examined and operated on the patients and reviewed the manuscript. MVM planned the study. JAM helped to draft and reviews the manuscript. All of the authors read and approved the final version of the manuscript.

Abstract

Background

The increasing number of revision knee arthroplasty result in the more frequently use of a constraint implant but results from previous reports are difficult to interpret. The purpose of this study was to compare the long-term outcomes of superficial cemented versus metaphyseal cemented in revision total knee arthroplasty with a condylar constrained arthroplasty.

Methods

The study was a retrospective analysis of clinical and radiographic outcomes in a series of revision total knee arthroplasties performed with a constrained condylar knee prosthesis and press-fit modular stems. We hypothesized that the clinical and radiographic outcome of surface cementation would be inferior to that of metaphyseal cementation. Fifty-two consecutive revision cases were followed for a median of 8.2 years (range, 6 to 10 years).

Results

Substantial improvements in range of motion and Knee Society score were achieved in all patients, although these were not significant between groups. Significantly more radiolucent lines were visible on the tibial component with surface cementation than with metaphyseal cementation, although the clinical differences were not relevant.

Conclusions

Radiologic outcome was better in revision total knee arthroplasty using metaphyseal cemented revision and components with press-fit cementless stems than in the surface cementation–based approach; however, the difference was not clinically relevant.
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