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International Orthopaedics

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01-06-2021 | Original Paper

Early experience using patient-specific instrumentation in opening wedge high tibial osteotomy

Authors: Vlad Predescu, Alina-Maria Grosu, Iulian Gherman, Catalin Prescura, Valentin Hiohi, Bogdan Deleanu

Published in: International Orthopaedics | Issue 6/2021

Abstract

Purpose

Patient-specific instruments (PSI) have been designed to improve the accuracy of performing opening-wedge high-tibial osteotomies (OW-HTO). This study aims to evaluate the lower limb alignment, by comparing pre-operative desired correction to post-operative achieved correction, the difference in surgical time and number of radiological exposures in OW-HTO using patient-specific instruments (PSI) versus conventional osteotomies and the specific and non-specific complications that occurred.

Methods

We performed a single-centre, retrospective, observational study, including 25 consecutive patients undergoing OW-HTO using PSI, from January 2019 to October 2020.

Results

Pre-operatively, the mean hip-knee angle (HKA) was 167°, the mean tibial slope was 7.9° and the mean medial proximal tibial angle (MPTA) was 82.5°. Post-operatively, the mean HKA was 182.2° (180.1–184.7°), the tibial slope was 6.5° (4.2–12.9°) and the MPTA was 92.8° (90.6–93°). In both coronal and sagittal plane, all knees were within 2° from the planned value. The mean tourniquet time, by which the surgical time was measured, was 40 minutes and the average number of intra-operative fluoroscopic images was 10 (range: 7–14), significantly less than when using conventional techniques.

Conclusions

The use of PSI in OW-HTO allows accurate achievement of the desired correction, while shortening the OR time. The number of radiological exposures is also decreased, in comparison with the conventional osteotomies.

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Title: Early experience using patient-specific instrumentation in opening wedge high tibial osteotomy
Authors: Vlad Predescu
Alina-Maria Grosu
Iulian Gherman
Catalin Prescura
Valentin Hiohi
Bogdan Deleanu
Publication date: 01-06-2021
Publisher: Springer Berlin Heidelberg
Published in: International Orthopaedics / Issue 6/2021
Print ISSN: 0341-2695
Electronic ISSN: 1432-5195
DOI: https://doi.org/10.1007/s00264-021-04964-z

Keynote webinar | Spotlight on sleep in brain health

Springer Medicine

Early experience using patient-specific instrumentation in opening wedge high tibial osteotomy

Abstract

Purpose

Methods

Results

Conclusions

Keynote webinar | Spotlight on sleep in brain health

Springer Medicine

Abstract

Purpose

Methods

Results

Conclusions

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