The effect of vacuum mixing and pre-heating the femoral component on the mechanical properties of the cement mantle.

@article{Baleani2010TheEO,
  title={The effect of vacuum mixing and pre-heating the femoral component on the mechanical properties of the cement mantle.},
  author={Massimiliano Baleani and Ewa Bialoblocka-Juszczyk and Gerwin Erik Engels and Marco Viceconti},
  journal={The Journal of bone and joint surgery. British volume},
  year={2010},
  volume={92 3},
  pages={
          454-60
        }
}
We investigated the effect of pre-heating a femoral component on the porosity and strength of bone cement, with or without vacuum mixing used for total hip replacement. Cement mantles were moulded in a manner simulating clinical practice for cemented hip replacement. During polymerisation, the temperature was monitored. Specimens of cement extracted from the mantles underwent bending or fatigue tests, and were examined for porosity. Pre-heating the stem alone significantly increased the mean… 
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References

SHOWING 1-10 OF 50 REFERENCES
Pre-heating of components in cemented total hip arthroplasty.
TLDR
A simulated femoral model was devised to study the effect of heating of the component on the implant-cement interface, and heating also reduces porosity at the interface depending on the temperature.
Vacuum-mixing cement does not decrease overall porosity in cemented femoral stems: an in vitro laboratory investigation.
The role of vacuum mixing on the reduction of porosity and on the clinical performance of cemented total hip replacements remains uncertain. We have used paired femoral constructs prepared with
Effect of stem preheating on the fatigue behaviour of bone cement around hip prostheses
TLDR
Stem preheating seems to have a negligible effect on fatigue behaviour of the studied bone cement in the low range of fatigue lives (up to 104), however, above this number of cycles, stem preheater seems to reduce the probability of failure.
Experimental study on the cement mantle in hip arthroplasty: effect of defects on the property of the materials used.
TLDR
A reduction in porosity at the stem-cement interface influenced bending strength of the specimens extracted from the mantle, and a significant difference between resistance to flexion in the specimens produced with the stem at 55 degrees, and in those with thestem at 23 degrees C was observed.
Effect of Increasing Temperature on the Properties of Four Bone Cements
TLDR
Based on this laboratory model, heating of the femoral stem could save time without sacrificing mechanical properties of acrylic bone cement.
Effects of Preheating of Hip Prostheses on the Stem-Cement Interface
TLDR
Stem preheating had significant effects on the stem-cement interface, with significant improvements in the shear strength and cement porosity of the interface and polymerization temperatures at the cement-bone interface increased.
The influence of stem insertion rate on the porosity of the cement mantle of hip joint replacements
  • M. Baleani, R. Fognani, A. Toni
  • Materials Science
    Proceedings of the Institution of Mechanical Engineers. Part H, Journal of engineering in medicine
  • 2003
TLDR
High porosity concentration at the stem/cement interface seems to be attributed also to the rheology of the cement during implant insertion, Nevertheless, the surgeon cannot influence the formation of porosity by changing the stem insertion rate.
Extensive porosity at the cement-femoral prosthesis interface: a preliminary study.
TLDR
The amount of porosity at the interface greatly exceeded the amount of general porosity found throughout the bulk cement and the presence of these pores may be explained by the rheological characteristics of the cement.
Porosity reduction in bone cement at the cement-stem interface.
TLDR
Reduction of porosity at the cement-stem interface could significantly increase the life of hip arthroplasties and reduce or eliminate the formation of voids at this interface.
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