KYON THR Introduction
Zurich, Switzerland

THR
Zurich Cementless Total Hip Replacement

The main design objective of the KYON  Zurich Cementless  THR, a proprietary system of implants, instruments and a surgical technique for canine total hip replacement, which provides immediate and indefinitely stable anchorage of the prosthetic components. Total hip replacement techniques fall into two categories: Cemented and Cementless. Cemented THR provides good short term, but less long term outcomes. Aseptic loosening, the most common reason for long term failure of THR, is responsible for 75% of revisions in human patients. Conventional press-fit cementless THR's have over 50% of the market, but the revision rates in all categories of human patients remain higher than with cemented THR. [1]  The femoral and acetabular components of the  Zurich Cementless  THR reflect different, both novel, approaches to the most common complications of canine total hip replacement.

In 1999, after six years of clinical experience, Prof. Pierre M. Montavon, Head of Small Animal Surgery at the School of Veterinary Medicine, University of Zurich, and Slobodan Tepic, dr. Sci., Dipl.Ing., Of the AO Research Institute, Davos, Switzerland, with the participation and advice of Dr. Ing. Ing. Aldo Vezzoni, DVM, Dipl. ECVS, Cremona, Italy, initiated an international, multi-center clinical study, to collect well-documented, broad-based clinical performance data on the  Zurich Cementless  Total Hip Replacement. Data contributed by fourteen surgeons from eight countries to over 750 cases is in the final stages of preparation for publication.Prof. Dr. Randy Boudrieau, DVM, Dipl. ACVS, Professor of Surgery, Cummings School of Veterinary Medicine, Tufts University, Massachusetts, USA.
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By the end of 2009, the  Zurich Cementless  THR has been used in over 9,000 dogs by more than 150 surgeons in Europe, the United States, Australia, and Japan. KYON holds an exclusive, worldwide patent license in the veterinary field for the anchorage of the THR femoral component from  SCYON Orthopedics AG .