Sirius Cemented Femoral Hip Stem

A modern approach to a trusted design

The Sirius femoral stem is a short cemented stem with a proven taper-slip philosophy for use in both primary and revision hip arthroplasty. 1,2 This stem design offers a reproducible hip solution with optimal cement-bone interface when combined with the well documented Modern Cementing Technique. 3-10

  • Double taper is designed to load the cement mantle, reducing stress shielding and proximal bone loss11
  • Fully polished surface helps to preserve the cement mantle under repeated loading11
  • Forged CoCrMo provides a high fatigue resistance  superior to that of Stainless Steel (HNSS)12,13
  • Five horizontal offsets with a choice of multiple body geometries designed to fit a broad range of patient anatomies and restore joint biomechanics and stability
  • Short stem, 100 to 130mm in length, designed in consideration of small stature patients and the Asian population (narrow isthmus and pronounced bow)
  • Optimised Type 1 taper increases ROM 14-16
  • Streamlined instrumentation designed to reduce hospital inventory and cost
  • For use with Biomet’s comprehensive cement products designed to support the Modern Cementing Technique

References

  1. Hook, S, et al. The Exeter Universal Stem. A Minimum Tem Year Review from an Independent Centre. Journal of Bone and Joint Surgery [Br.]. 88(12):1584-90, 2006.
  2. Makela, K., et al. Cemented Total Hip Replacement for Primary Ostoarthritis in patients Aged 55 Years or Older: Results of the 12 Most Common Cemented Implants Followed for 25 Years in the Finnish Arthroplasty Register. Journal of Bone and Joint Surgery. 90(12): 1592-9, 2008.
  3. Wang J.S. et al. Porosity of Bone Cement Reduced by Mixing and Collecting Under Vacuum. Acta Orthop Scand. 64 (2): 143-146, 1993.
  4. Wang J.S. and Kjellson F. Bone Cements and Cementing Technique: Bone Cement Porosity in Vacuum Mixing Systems. Walenkamp, Murray (Eds). Springer Verlag, 2001.
  5. Dunne N.J. and Orr J.F. Influence of the Mixing Techniques on the Physical Properties of Acrylic Bone Cement. Biomaterials. 22: 1819-1826, 2001.
  6. Report from SP Technical Research Institute of Sweden (2007 08 13). Airborne Methyl methacrylate Monomer During the Use of Different Bone Cement Mixing Systems.
  7. Wilkinson J.M. et al. Effect of Mixing Technique on the Properties of Acrylic Bone-Cement. The Journal of Arthroplasty .15:663-7, 2000.
  8. Miller, J. and Johnson, J. Advances in Cementing Techniques in Total Hip Arthroplasty in The Art of Total Hip Arthroplasty. Grune & Stratton Inc , 1987.
  9. Breusch, S.J. et al. Lavage Technique in Total Hip Arthroplasty: Jet Lavage Produces Better Cement Penetration than Syringe Lavage in the Proximal Femur. Journal of Arthroplasty. 15(7):921-7, 2000.
  10. Lidgren, L. et al. Bone Cement Improved by Vacuum Mixing and Chilling. Acta Orthop Scand. 57: 27-32, 1987.
  11. Scheerlinck T. and Casteleyn, P.P. The Design Features of Cemented Femoral Hip Implants. Journal of Bone and Joint Surgery [Br]. 88(11): 1409-18, 2006.
  12. Data on file at Biomet. CoCrMo Material Specification Report. WS.D99.011-03. Biomet Berlin.
  13. Data on file at Biomet. High-N Material Specification Report. WS.D99.070Biomet Berlin.
  14. Bourne R.B. and Rorabeck C.H. Soft Tissue Balancing: The Hip. Journal of Arthroplasty. 17(4):17–22, 2002
  15. Charnley J. Low Friction Arthroplasty of the Hip. New York: Springer-Verlag. 3–15, 1979.
  16. McGrory B.J. et al. Effect of Femoral Offset on Range of Motion and Abductor Muscle Strength after Total Hip Arthroplasty. Journal of Bone and Joint Surgery (British). 17(4): 865–9, 1995.

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