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Published in: International Orthopaedics 12/2020

01-12-2020 | Knee-TEP | Original Paper

Complications of computer-assisted navigation in total knee replacement: retrospective cohort of eight hundred and seventy eight consecutive knees

Authors: Carlos Daniel Novoa-Parra, R. Sanjuan-Cerveró, N. Franco-Ferrando, R. Larrainzar-Garijo, G. Egea-Castro, A. Lizaur-Utrilla

Published in: International Orthopaedics | Issue 12/2020

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Abstract

Purpose

The main objective was to analyze the computer-assisted navigation (CAN)-specific complications that forced to switch to conventional procedure in primary total knee replacement (TKR). The secondary objective was to determine the influence of those complications on TKR short-term survival.

Methods

Retrospective study of 878 primary TKR in 753 patients. Two consecutive versions of the OrthoPilot navigation system (Braun Aesculap, Germany) were used during the study time. Specific complications of CAN were defined as those due to the instrumentation (hardware or software failures), which were classified in one of two categories according to whether they occurred during the registration or tracking process.

Results

There were 20 (2.3%) complications related to the navigation system use that forced to switch to conventional surgery: in 11 (1.2%) knees due to loosening of the tracking pins, and in the other nine (1.0%) there were information system failures. There was a trend for a higher conversion rate to conventional surgery with the use of the first version of the software. There were no fractures, infections, or nerve injuries at the pin site. We found no differences in the distribution of baseline variables among those with or without conversion to conventional surgery. There was no significant difference (p = 0.488) in the two year survival between patients with or without conversion.

Conclusion

CAN for primary TKR is a safe method with few specific complications that forced to switch from the navigated to the conventional procedure. Conversion to conventional surgery did not affect the short-term survival of TKR.
Literature
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go back to reference Thomas A, Pemmaraju G, Nagra G, Bassett J, Deshpande S (2015) Complications resulting from tracker pin-sites in computer navigated knee replacement surgery. Acta Orthop Belg 81:708–712PubMed Thomas A, Pemmaraju G, Nagra G, Bassett J, Deshpande S (2015) Complications resulting from tracker pin-sites in computer navigated knee replacement surgery. Acta Orthop Belg 81:708–712PubMed
Metadata
Title
Complications of computer-assisted navigation in total knee replacement: retrospective cohort of eight hundred and seventy eight consecutive knees
Authors
Carlos Daniel Novoa-Parra
R. Sanjuan-Cerveró
N. Franco-Ferrando
R. Larrainzar-Garijo
G. Egea-Castro
A. Lizaur-Utrilla
Publication date
01-12-2020
Publisher
Springer Berlin Heidelberg
Keywords
Knee-TEP
Knee-TEP
Published in
International Orthopaedics / Issue 12/2020
Print ISSN: 0341-2695
Electronic ISSN: 1432-5195
DOI
https://doi.org/10.1007/s00264-020-04675-x

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