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Published in: International Orthopaedics 3/2015

01-03-2015 | Original Paper

Is it possible to re-establish pre-operative patellar kinematics using a ligament-balanced technique in total knee arthroplasty? A cadaveric investigation

Authors: Armin Keshmiri, Hans Springorum, Clemens Baier, Florian Zeman, Joachim Grifka, Günther Maderbacher

Published in: International Orthopaedics | Issue 3/2015

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Abstract

Purpose

Several authors emphasise that the appearance of patellar maltracking after total knee arthroplasty (TKA) is caused by rotational malalignment of the femoral and tibial components. Ligament-balanced femoral component rotation was not found to be associated with abnormal postoperative patellar position. We hypothesised that a ligament-balanced technique in TKA has the ability to best re-establish patellar kinematics.

Methods

In ten cadaveric knees TKA was performed assessing femoral rotation in ligament-balanced and different femoral and tibial component rotation alignments. Patellar kinematics after different component rotations were analysed using a commercial computer navigation system.

Results

Ligament-balanced femoral rotation showed the best re-establishment of patellar kinematics after TKA compared to the healthy pre-operative knee. In contrast to tibial component rotation, femoral component rotation had a major impact on patellofemoral kinematics.

Conclusions

This investigation suggests that a ligament-balanced technique in TKA is most likely to re-establish natural patellofemoral kinematics. Tibial component rotation did not influence patellar kinematics.
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Metadata
Title
Is it possible to re-establish pre-operative patellar kinematics using a ligament-balanced technique in total knee arthroplasty? A cadaveric investigation
Authors
Armin Keshmiri
Hans Springorum
Clemens Baier
Florian Zeman
Joachim Grifka
Günther Maderbacher
Publication date
01-03-2015
Publisher
Springer Berlin Heidelberg
Published in
International Orthopaedics / Issue 3/2015
Print ISSN: 0341-2695
Electronic ISSN: 1432-5195
DOI
https://doi.org/10.1007/s00264-014-2507-7

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