Kyon Cementless Total Hip Arthroplasty

My interest in cementless Total Hip Arthroplasty began in 1993 when I was introduced to the experimental PCA-Howmedica system while visiting Dave De Young at NCSU Veterinary College. After previous experience with cemented prostheses, I was looking for a commercially available cementless system to eliminate the complications I had encountered with cemented hips, mainly aseptic implant loosening and implant failure. While visiting the Veterinary School in Zurich in 1995, I had the opportunity to work with Pierre Montavon and Slobodan Tepic during their initial studies on the original ’Zurich’ cementless THA. I started using this technique in my own hospital in 1997. Fascinated by the high-tech original features of the system, I convinced the inventors to extend the clinical application of the ’Zurich’ cementless THA to selected veterinary institutions to undertake an international multicentre study. The feed-back we received from that global clinical study, which included shortand long-term evaluations, allowed improvements of the first generation of implants to produce more efficient second and third generation implants. The ultimate proof of validity of a THR system is its ‘survival’ when applied to a large number of patients worldwide.