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Cementless second-generation hydroxyapatite CaP-coated tibial component: an 8.7-year follow-up

  • Knee Arthroplasty
  • Published:
Archives of Orthopaedic and Trauma Surgery Aims and scope Submit manuscript

Abstract

Background

This is the first study that reports on the mid-term results of 81 patients suffering from arthritis of the knee, treated with a cementless second-generation hydroxyapatite calcium phosphate (CaP)-coated tibial component.

Materials and methods

Seventy-six knees with osteoarthritis were evaluated according to the Knee Society clinical, functional and radiological score, the Hospital for Special Surgery Rating System and the Patella Score. The clinical and radiological parameters were assessed preoperatively and after a mean follow-up of 8.7 years.

Results

All the three score systems revealed excellent clinical outcomes after the follow-up period. The mean preoperative Knee Society clinical Score was 124.41 ± 12.99 and the mean postoperative score was 187.07 ± 14.59 at the time of the final consultation (p = 0.0008). The survival rate was 97.5 %. Radiolucency of <1 mm around the uncemented hydroxyapatite CaP-coated tibial component without accompanying pain symptoms was seen in fewer than 6 % of cases. In two cases, a medial cyst, also without other clinical symptoms, was observed beside the tip of the tibial fixation screw.

Conclusion

These findings indicate that the uncemented second-generation hydroxyapatite CaP-coated tibial component performed well at mid-term follow-up, and provides sufficiently stable bone ingrowth fixation.

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Acknowledgments

The authors thank Mrs. Kaye Schreyer for editorial assistance and proof reading.

Conflict of interest

The authors declare that they have no conflict of interest.

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Authors and Affiliations

  1. Department of Orthopedic and Trauma Surgery, St. Barbara Hospital, Barbara Str. 1, 45964, Gladbeck, Germany

    Christian Wedemeyer, Miralay Bülbül, Ralf Peppmüller & Thomas Bredendiek

  2. Department of Orthopedic Surgery, University of Duisburg-Essen, Hufelandstr. 55, 45122, Essen, Germany

    Christian Wedemeyer & Marcus Jäger

  3. Department of Trauma Surgery, University of Duisburg-Essen, Hufelandstr. 55, 45122, Essen, Germany

    Max Daniel Kauther

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  1. Christian Wedemeyer
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Correspondence to Christian Wedemeyer.

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Wedemeyer, C., Kauther, M.D., Bülbül, M. et al. Cementless second-generation hydroxyapatite CaP-coated tibial component: an 8.7-year follow-up. Arch Orthop Trauma Surg 132, 1759–1764 (2012). https://doi.org/10.1007/s00402-012-1608-2

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  • DOI: https://doi.org/10.1007/s00402-012-1608-2

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