Your web browser is out of date. For the best experience on Zimmer websites please upgrade to the latest version of Internet Explorer, Chrome, or Firefox.

Zimmer, Inc.

The Allofit® IT Acetabular System

Product Description

For orthopedic surgeons treating a wide range of patients, the Allofit ® IT Acetabular System provides a clinically proven1-4 structure and the power to choose advanced bearing options that best meet individual patient needs.

Clinically proven structure of the Allofit Acetabular System

  • Over fifteen years of clinical history 1-4

Power to choose advanced bearing technologies to match patient demands

  • Longevity ® Highly Crosslinked Polyethylene that is highly resistant to wear and aging, with over ten years of proven clinical history.5-14
  • Metasul ® Technology has a very low wear rate with over twenty years of clinical history.15,16
  • BIOLOX ® delta Ceramic*, affords a very low wear rate in a material with improved mechanical properties compared to traditional ceramics.17

* BIOLOX® is a trademark of Ceramtech GmbH

Design Rationale

References

  1. Zenz P et al.; 10 years results after implantation of the cementless pressfit cup “Allofit”; presented at EFORT Florenz, 2007
  2. Studener H et al.; Klinische und radiologische 10-Jahres-Ergebnisse nach zementfreier Allofit Hüftimplantation; presented at Southern German Orthopedic Congress 2008
  3. Garcia-Rey E, et al., New Polyethylenes in total hip replacement: a prospective, comparative clinical study of two types of liners. JBJS Br. 2008; 90(2): 149-153
  4. Data on file at Zimmer
  5. Medel FJ, Kurtz SM, MacDonald DW, et al. First-generation highly crosslinked polyethylene in THA: clinical and material performance. Las Vegas, 55th Meeting of the Orthopaedic Research Society, 2009
  6. Kärrholm J, Five to seven years experiences of highly crosslinked PE. Abstract number 19059, SICOT Hong Kong, August 2008
  7. McCalden RW, MacDonald SJ, Rorabeck CH, Bourne RB, Chess DG, Charron KD, Wear Rate of Highly Crosslinked Polyethylene in Total Hip Arthroplasty. A Randomized Controlled Study. J Bone Joint Surg Am. 2009;91:773-82
  8. Bragdon CR, et al., Minimum 6-year Follow up of Highly Crosslinked Polyethylene in THA, Clin Orthop. December 2007; (465): 122-127
  9. Wannomae KK, et al. In vivo oxidation of retrieved crosslinked ultra-high molecular-weight polyethylene acetabular components with residual free radicals. J Arthroplasty. 2006;21(7):1005-1011
  10. Collier JP, et al. Comparison of cross-linked polyethylene materials for orthopaedic applications. Clin Orthop. 2003;414:289-304
  11. Bhattacharyya S et al. Severe In Vivo Oxidation in a Limited Series of Retrieved Highly-Crosslinked UHMWPE Acetabluar Components with Residual Free Radicals, 50th Annual Meeting of the Orthopaedic Research Socieity, Paper 0276, Las Vegas, 2004
  12. Jibodh, SR, et al., Minimum Five Year Outcome and Wear Analysis of Large Diameter Femoral Heads on Highly Crosslinked Polyethylene Liners, Poster No. 2445, 55th Annual Meeting of the Orthopaedic Research Society, Las Vegas, 2009
  13. Bragdon CR, et al., Minimum 6-year Follow up of Highly Crosslinked Polyethylene in THA, Clin Orthop. December 2007; (465): 122-127
  14. Digas et al., Crosslinked vs. Conventional Polyethylene in Bilateral Hybrid THR Randomised Radiostereometric Study, 50th Annual Meeting of the Orthopaedic Research Society, Poster No. 0319, Las Vegas, 2004
  15. Rieker CB, Schön R, Köttig P, et al. Development and validation of a second-generation Metal-on-Metal bearing: laboratory study and analysis of retrievals. J Arthroplasty. 2004;19 (8, suppl 3):5-11
  16. Data on file at Zimmer
  17. Stewart TD, et al., Long-term wear of ceramic matrix composite materials for hip prostheses under severe swing phase micro-separation, J Biomed Mater Res B Appl Biomater. 2003; 66: 567-573