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International Orthopaedics

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01-04-2021 | Hip-TEP | Original Paper

Interchangeable neck failures of bi-modular femoral stems in primary total hip arthroplasty cannot be predicted from serum trace element analysis

Authors: Samo K. Fokter, Jan Zajc, Matjaž Merc

Published in: International Orthopaedics | Issue 4/2021

Abstract

Introduction

Revision of a well-fixed stem due to unexpected modular neck fracture is a catastrophe for the patient and a challenge for the surgeon. This study aimed to test the possibility of predicting interchangeable neck fracture from serum levels of the stem/neck alloy-consisting metals.

Materials and methods

Nineteen patients at high risk for interchangeable neck fracture were randomly selected out of a cohort of 680 bimodular stems made from Ti6Al4V alloy. Serum levels of titanium, aluminium and vanadium were determined. Nine age- and gender-matched patients were used as controls.

Results

Mean serum levels of Ti were 6.04 ± 2.52 μg/L, of Al 3.89 ± 1.68 μg/L and of V 0.07 ± 0.04 μg/L in the high-risk group, and 8.22 ± 4.74 μg/L, 4.99 ± 3.98 μg/L and 0.27 ± 0.44 μg/L in the low-risk group, respectively. No statistically significant differences were found between the groups.

Discussion

Interchangeable neck fracture of bimodular femoral stems cannot be predicted from serum trace element analysis.

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Title: Interchangeable neck failures of bi-modular femoral stems in primary total hip arthroplasty cannot be predicted from serum trace element analysis
Authors: Samo K. Fokter
Jan Zajc
Matjaž Merc
Publication date: 01-04-2021
Publisher: Springer Berlin Heidelberg
Keywords: Hip-TEP
Hip-TEP
Published in: International Orthopaedics / Issue 4/2021
Print ISSN: 0341-2695
Electronic ISSN: 1432-5195
DOI: https://doi.org/10.1007/s00264-020-04812-6

At a glance: The ONWARDS insulin icodec trials

Springer Medicine

Interchangeable neck failures of bi-modular femoral stems in primary total hip arthroplasty cannot be predicted from serum trace element analysis

Abstract

Introduction

Materials and methods

Results

Discussion

At a glance: The ONWARDS insulin icodec trials

Springer Medicine

Abstract

Introduction

Materials and methods

Results

Discussion

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