Modular titanium alloy neck failure in total hip replacement: analysis of a relapse case.

Marco Ceretti,Francesco Falez

doi:10.1051/sicotj/2016009

Marco Ceretti, Francesco Falez

Open Access

https://doi.org/10.1051/sicotj/2016009

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Journal: SICOT-J	Publication Date: Jan 1, 2016
Citations: 21	License type: cc-by

Affiliation: Ospedale San Filippo Neri, Ospedale di Santo Spirito

Abstract

Modular neck hip prosthesis born in the 1990 with the aim of allowing the surgeon to modify CCD angle, offset and femoral anteversion intra-operatively restoring patient’s original biomechanics. In order to achieve the best biomechanics of the reconstructed hip, preoperative planning is essential. In the last few years modularity has been questioned and an argument made for the return to mono block stems due to events of breakage or disconnection of modular components. Fretting or crevice corrosion may lead to failure of such modular device due to the contamination inside the modular coupling or to high loads. We present a case of repetitive modular femoral neck prosthesis fracture.

Highlights

OPEN ACCESSModular titanium alloy neck failure in total hip replacement: analysis of a relapse case
Modularity introduction in the last 1990 has changed the approach strategies in primary and revision total hip replacement
Our strategy was to remove the modulus hip stem using a Wagner osteotomy and our choice was to implant a Wagner monoblock uncemented titanium stem (Wagner SL revision produced by Zimmer) with a 36 mm + 3.5 Biolox delta ceramic head (Figure 4)

Summary

OPEN ACCESS

Modular titanium alloy neck failure in total hip replacement: analysis of a relapse case. Received 15 January 2016, Accepted 23 January 2016, Published online 29 April 2016. Abstract – Modular neck hip prosthesis born in the 1990 with the aim of allowing the surgeon to modify CCD angle, offset and femoral anteversion intra-operatively restoring patient’s original biomechanics. In order to achieve the best biomechanics of the reconstructed hip, preoperative planning is essential. In the last few years modularity has been questioned and an argument made for the return to mono block stems due to events of breakage or disconnection of modular components. Fretting or crevice corrosion may lead to failure of such modular device due to the contamination inside the modular coupling or to high loads. We present a case of repetitive modular femoral neck prosthesis fracture

Introduction

Case report

Discussion

Findings

Conflict of interest