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Archives of Orthopaedic and Trauma Surgery
Published in: Archives of Orthopaedic and Trauma Surgery 2/2020

01-02-2020 | Genu Varum | Arthroscopy and Sports Medicine

A novel device for greater precision and safety in open-wedge high tibial osteotomy: cadaveric study

Authors: Cristiano Hossri Ribeiro, Mauricio Sante Bettio Mod, Daniel Isch, Clemens Baier, Guenther Maderbacher, Nilson Roberto Severino, Daniele Cristina Cataneo

Published in: Archives of Orthopaedic and Trauma Surgery | Issue 2/2020

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Abstract

Introduction

The complications of the open-wedge osteotomy technique (slope, hypo- and hypercorrection and fractures) are related to difficulties in the control of the open-wedge angle during surgery.

Materials and methods

In this cadaveric study, we evaluated the safety and precision of a novel system, the Realignment High Control System (RHC), in the correction of knee mechanical axis and slope. The RHC has a fixation plate coupled to a dynamic device that opens the osteotomy continuously, allowing plate fixation before osteotomy wedge opening.

Results

All procedures were easily performed, with no fractures. The openings equaled the indicated by the navigation system for 7.5° and 10°, and for 5°, there was a statistically, although not clinically significant, difference of 0.6°. The slope shown by the RHC setting and in the navigation system was significantly different for the 10° setting only, with a mean difference of 0.563°.

Conclusions

RHC facilitates the surgical technique of high tibial osteotomy, with gradual wedge opening, precise correction of the mechanical axis, and appropriate control of the tibial slope, even with larger openings.
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Metadata
Title
A novel device for greater precision and safety in open-wedge high tibial osteotomy: cadaveric study
Authors
Cristiano Hossri Ribeiro
Mauricio Sante Bettio Mod
Daniel Isch
Clemens Baier
Guenther Maderbacher
Nilson Roberto Severino
Daniele Cristina Cataneo
Publication date
01-02-2020
Publisher
Springer Berlin Heidelberg
Keyword
Genu Varum
Published in
Archives of Orthopaedic and Trauma Surgery / Issue 2/2020
Print ISSN: 0936-8051
Electronic ISSN: 1434-3916
DOI
https://doi.org/10.1007/s00402-019-03300-w

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