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Archives of Orthopaedic and Trauma Surgery

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01-11-2015 | Hip Arthroplasty

Influences of fit and fill following hip arthroplasty using a cementless short-stem prosthesis

Authors: Alexander Jahnke, Sandra Engl, Jörn Bengt Seeger, Erhan Basad, Markus Rickert, Bernd Alexander Ishaque

Published in: Archives of Orthopaedic and Trauma Surgery | Issue 11/2015

Abstract

Introduction

The purpose of this study consisted in examining the effects of fit and fill ratio of the Metha^® prosthesis (BBraun, Aesculap, Tuttlingen, Germany) on radiological and clinical outcomes at a follow-up of 1 year.

Methods

40 patients were included. Fit and fill ratio measurements, radiological and clinical examinations were performed preoperatively and postoperatively. Correlations were established between fit and fill ratio, and potential factors like sex, age, body mass index, Harris Hip Score and changes of radiological signs.

Results

The whole cohort (100 %) had a tight fit and fill ratio (>0.8) at the proximal level and at each follow-up. “Champagne-flute” configuration provoked high distal tight-fit and fill ratio. Poor distal fit and fill ratio compared to the proximal and the mid-stem level was measurable at each follow-up (p < 0.05). Correlations between fit and fill ratio and preoperative femur configurations were detectable.

Conclusions

Implanting the Metha^® prosthesis induces tight fit and fill ratio at the proximal and coated sections. Preoperative femur configuration should be considered to achieve best fit and fill situation and therefore excellent primary stability. In most cases “normal” and “stove-pipe” configurations provide good proximal fit and fill. Since “champagne-flute” configuration induces undesirable tight distal fit and fill ratio the size of the Metha^® stem should be adequately increased to achieve a more proximal load transmission.

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Title: Influences of fit and fill following hip arthroplasty using a cementless short-stem prosthesis
Authors: Alexander Jahnke
Sandra Engl
Jörn Bengt Seeger
Erhan Basad
Markus Rickert
Bernd Alexander Ishaque
Publication date: 01-11-2015
Publisher: Springer Berlin Heidelberg
Published in: Archives of Orthopaedic and Trauma Surgery / Issue 11/2015
Print ISSN: 0936-8051
Electronic ISSN: 1434-3916
DOI: https://doi.org/10.1007/s00402-015-2302-y

At a glance: The STEP trials

Springer Medicine

Influences of fit and fill following hip arthroplasty using a cementless short-stem prosthesis

Abstract

Introduction

Methods

Results

Conclusions

At a glance: The STEP trials

Springer Medicine

Abstract

Introduction

Methods

Results

Conclusions

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