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Archives of Orthopaedic and Trauma Surgery

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01-06-2009 | Orthopaedic Surgery

Impact magnitudes applied by surgeons and their importance when applying the femoral head onto the Morse taper for total hip arthroplasty

Authors: Jake P. Heiney, Suneel Battula, Gregory A. Vrabec, Anand Parikh, Rebecca Blice, Andrew J. Schoenfeld, Glenn O. Njus

Published in: Archives of Orthopaedic and Trauma Surgery | Issue 6/2009

Abstract

Introduction

This study was designed to test whether the number of impacts, the experience of the surgeon or impact force made significant difference in pull off forces.

Materials and methods

The forces applied by 10 orthopaedic surgeons (five residents and five attending staff) to impact the femoral head onto the trunnion of a femoral component were recorded. The resultant forces were then divided into four energy levels and compared to determine if the number of impacts would make a difference in pull off strength.

Results

No significant differences existed between the resident versus attending groups in magnitude of force applied. Through ANOVA testing, it was found that at each of the energy levels, multiple blows demonstrated a significant pull off strength difference compared to a single blow. Increased pull off force was also noted when the magnitude of force of the applied blows was increased.

Conclusion

We recommend at least two firm, axially aligned blows to impact the femoral head onto the trunnion intra-operatively.

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Title: Impact magnitudes applied by surgeons and their importance when applying the femoral head onto the Morse taper for total hip arthroplasty
Authors: Jake P. Heiney
Suneel Battula
Gregory A. Vrabec
Anand Parikh
Rebecca Blice
Andrew J. Schoenfeld
Glenn O. Njus
Publication date: 01-06-2009
Publisher: Springer-Verlag
Published in: Archives of Orthopaedic and Trauma Surgery / Issue 6/2009
Print ISSN: 0936-8051
Electronic ISSN: 1434-3916
DOI: https://doi.org/10.1007/s00402-008-0660-4

At a glance: The STEP trials

Springer Medicine

Impact magnitudes applied by surgeons and their importance when applying the femoral head onto the Morse taper for total hip arthroplasty

Abstract

Introduction

Materials and methods

Results

Conclusion

At a glance: The STEP trials

Springer Medicine

Abstract

Introduction

Materials and methods

Results

Conclusion

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