Long lasting outcome of hydroxyapatite-coated implants in primary knee arthroplasty: a continuous series of two hundred and seventy total knee arthroplasties at fifteen to twenty two years of clinical follow-up
Jean-Alain EpinetteKnee
Purpose
This study is a long-term review of an hydroxyapatite (HA)-coated knee prosthesis. Our aim was to confirm that excellent previously reported results with HA knees could stand the test of time at the 15-year milestone.
Methods
A total of 270 cruciate retaining HA-Omnifit knees, implanted in the same institution by a single surgeon with the same surgical procedure, were reviewed at 15–22 years of clinical follow-up (75 knees partially-coated and 195 fully-coated).
Results
At review, IKS mean values were 95.6 points for knee score and 91.19 points for function score. Radiological review confirmed an excellent long-lasting fixation over years in the long run. Taking implant failure as the end-point, the survival rate was 97.1 % at 20 years.
Conclusions
Our results were as good, and often better, than the best cemented or porous published studies. These very encouraging results at 15–22 years make us very confident in the ultimate outcome of bioconductive coatings in knee arthroplasty.
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