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Archives of Orthopaedic and Trauma Surgery

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Open Access 01-01-2021 | Hip-TEP | Hip Arthroplasty

Two-year radiologic assessment of the Pinnacle cup—a migration analysis with EBRA

Authors: Dietmar Dammerer, Alexander Ruzicka, Philipp Blum, David Putzer, Maximilian Liebsch, Julian Lair, Martin Thaler

Published in: Archives of Orthopaedic and Trauma Surgery | Issue 1/2021

Abstract

Introduction

The most common cause of failure in total hip arthroplasty (THA) is aseptic loosening. Uncemented cup migration analysis by EBRA (Einzel-Bild-Roentgen-Analyse) has shown to be a good predictive indicator for early implant failure if the cup migrates more than 1 milimeter (mm) within the first 2 years after surgery. In this study, we investigated the migration behaviour of an uncemented press-fit cup after 2 years follow-up.

Materials and methods

Applying a retrospective study design, we reviewed all consecutive patients who received an uncemented press-fit cup at our Department between 2013 and 2018. A total of 484 patients were identified. We reviewed medical histories and performed radiological measurements using EBRA-Cup software. EBRA measurements and statistical investigations were performed by two independent investigators.

Results

A total of 165 cups in 159 patients (female: 90; male: 69) met our inclusion criteria. Mean age at surgery was 66.7 (range 18.4–90.5) years. EBRA migration analysis showed a mean total migration of 0.7 mm (range 0.0–6.3) over our follow-up period of 2 years. Of the investigated cups, 53.2% showed less than 1 mm migration in the investigated follow-up period.

Conclusion

In conclusion, the Pinnacle cup used in our study provides low mean migration at final follow-up. Based on the assumption of secondary stabilization, good long-term outcome of the Pinnacle cup can be expected.

Trial registration number and date of registration

Number: 20181024-1875; Date: 2018-09-20

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Title: Two-year radiologic assessment of the Pinnacle cup—a migration analysis with EBRA
Authors: Dietmar Dammerer
Alexander Ruzicka
Philipp Blum
David Putzer
Maximilian Liebsch
Julian Lair
Martin Thaler
Publication date: 01-01-2021
Publisher: Springer Berlin Heidelberg
Keywords: Hip-TEP
Hip-TEP
Published in: Archives of Orthopaedic and Trauma Surgery / Issue 1/2021
Print ISSN: 0936-8051
Electronic ISSN: 1434-3916
DOI: https://doi.org/10.1007/s00402-020-03648-4

Keynote webinar | Spotlight on medication adherence

Springer Medicine

Two-year radiologic assessment of the Pinnacle cup—a migration analysis with EBRA

Abstract

Introduction

Materials and methods

Results

Conclusion

Trial registration number and date of registration

Keynote webinar | Spotlight on medication adherence

Springer Medicine

Abstract

Introduction

Materials and methods

Results

Conclusion

Trial registration number and date of registration

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