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Biomechanical behaviour of implant-reinforced subcapital humeral fractures

  • B. Füchtmeier , J. Hammer EMAIL logo und M. Nerlich
Veröffentlicht/Copyright: 3. Januar 2021
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International Journal of Materials Research
Aus der Zeitschrift International Journal of Materials Research Band 93 Heft 8

Abstract

A pair-controlled study was performed to compare the biomechanical behaviour of implant-reinforced fractured humeri under bending and under torsional loading, respectively. Special interest is related to the fixation potential of a prototype version of an intramedullary nail for stabilisation of subcapital humeral fracture. This nail is especially designed in terms of application for less invasive surgery purposes. In this study, two different modifications of this prototype nail are directly compared with respect to the stabilisation potential in direct comparison to conventionally applied implant techniques (wire technique and plate fixing). First results indicate that fixing of subcapital fracture by this intramedullary nail type provides a good compromise concerning the stabilisation under both loading types, bending and torsion, respectively.

Abstract

Das biomechanische Verhalten implantat-verstärkter gebrochener Oberarmknochen wurde unter Biege- und unter Torsionsbelastung untersucht. Von besonderem Interesse war das Stabilisierungspotential eines minimal invasiv implantierbaren Marknagel-Prototyps zur Fixierung subkapitaler Humerusbrüche. Im Rahmen dieser Untersuchung wurden zwei Modifikationen dieses neuen Marknagels hinsichtlich ihrer Stabilisierungsqualität untersucht und direkt mit den Ergebnissen von mit konventioneller Implantattechnik fixierten Brüchen (K-Drähte und T-Platte) verglichen. Erste Ergebnisse belegen, dass dieser neue Marknagel einen sehr guten Kompromiss hinsichtlich der Stabilisierung sub-kapitaler Brüche des Humerus sowohl unter Biege- als auch unter Torsionsbelastung darstellt.

Keywords: Intramedullary nailing; Proximal humeral fractures; Less invasive fixation; Mechanical stability; Biomechanical behaviour
Prof. Dr.-Ing. J. Hammer Fachhochschule Regensburg Galgenbergstr. 30, D-93053 Regensburg Tel.: +49 941 943 5153 Fax: +49 941 943 1428

Dedicated to Professor Dr. Haël Mughrabi on the occasion of his 65th birthday

The authors thank R. Jacobsen for preparing and conducting the mechanical experiments, and as well H.-P. Bräu, F. Rauscher and M. All-meier for technical assistance. Special thanks are due to S. Schrammel for support concerning electronic questions and to E. Steinberger for preparing the figures.

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Received: 2002-02-20
Published Online: 2021-01-03

© 2002 Carl Hanser Verlag, München

Artikel in diesem Heft

  1. Frontmatter
  2. Articles/Aufsätze
  3. Peierls barriers, kinks, and flow stress: Recent progress
  4. Positron annihilation spectroscopy – a non-destructive method for lifetime prediction in the field of dynamical material testing
  5. Diffusion bonding of gamma-based titanium aluminides
  6. A nanotheory of the intense slip localization causing metal fatigue
  7. Dislocation and surface structures of copper and very-low-carbon steel at low fatigue amplitudes
  8. Effect of hafnium on the castability of directionally solidified nickel-base superalloys
  9. Polysiloxane-derived ceramic foam for the reinforcement of Mg alloy
  10. Biomechanical behaviour of implant-reinforced subcapital humeral fractures
  11. Thermodynamic modeling of the Ni – In system
  12. Oxidation of metals investigated by in situ surface sensitive X-ray diffraction
  13. Embrittlement of Cu [001] symmetric tilt boundaries induced by Sb segregation
  14. The microstructure of a Mg-10 wt.% Al alloy
  15. Notifications/Mitteilungen
  16. Personal/Personelles
  17. Books/Bücher
  18. Books/DGM
  19. Conferences/Konferenzen
https://doi.org/10.3139/ijmr-2002-0137
Schlagwörter für diesen Artikel
Intramedullary nailing; Proximal humeral fractures; Less invasive fixation; Mechanical stability; Biomechanical behaviour

Artikel in diesem Heft

  1. Frontmatter
  2. Articles/Aufsätze
  3. Peierls barriers, kinks, and flow stress: Recent progress
  4. Positron annihilation spectroscopy – a non-destructive method for lifetime prediction in the field of dynamical material testing
  5. Diffusion bonding of gamma-based titanium aluminides
  6. A nanotheory of the intense slip localization causing metal fatigue
  7. Dislocation and surface structures of copper and very-low-carbon steel at low fatigue amplitudes
  8. Effect of hafnium on the castability of directionally solidified nickel-base superalloys
  9. Polysiloxane-derived ceramic foam for the reinforcement of Mg alloy
  10. Biomechanical behaviour of implant-reinforced subcapital humeral fractures
  11. Thermodynamic modeling of the Ni – In system
  12. Oxidation of metals investigated by in situ surface sensitive X-ray diffraction
  13. Embrittlement of Cu [001] symmetric tilt boundaries induced by Sb segregation
  14. The microstructure of a Mg-10 wt.% Al alloy
  15. Notifications/Mitteilungen
  16. Personal/Personelles
  17. Books/Bücher
  18. Books/DGM
  19. Conferences/Konferenzen
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