The number of young patients undergoing total knee arthroplasty is rapidly increasing. Long-term follow-up of modern type implants is needed to provide a benchmark of implant longevity for these patients. Between January 1995 and October 1997, 245 consecutive total knee arthroplasties were performed in 217 patients by a single surgeon. In 156 knees, the Genesis I implant was used, and in 89 knees the Genesis II implant was used. Mean age at surgery was 69.3 years for the Genesis I cohort and 66 years for the Genesis II (p = 0.016). At 15 to 17 years, cumulative survivorship was calculated using Kaplan-Meier statistics whilst outcomes were rated with the ‘Knee society score’ and with the ‘Knee Injury and Osteoarthritis Outcome Score’. Radiological assessment included coronal alignment measured on full leg standing X-rays, and analysis of radiolucent lines and polyethylene thickness on AP, Lateral and Axial X-rays, positioned under fluoroscopic control.Background:
Methods:
