AB1192 Decreasing Trend of Total Joint Arthroplasties for Rheumatoid Patients Compared to Osteoarthritis Patients in Our Institutes in Last Decade

BackgroundElderly people over 65 year-old have increased year by year in many countries1. Because their rate was from 19.5% at 2005 to 25.1% at 2014 in Japan, the numbers of total joint arthroplasties have increased too. On the other hand, modern treatments for rheumatoid arthritis (RA) have drastically changed in the last decade. The rate of orthopaedic surgery, especially total joint arthroplasty, may reflect trends in disease severity of RA, management and health outcomes2,3.ObjectivesThe aim of this study was to analyze the trend of total joint arthroplasties for RA patients and osteoarthritis (OA) patients in our institutes in the last decade.MethodsWe surveyed the number and rate of orthopaedic surgeries and total joint arthroplasties in our three institutes from 2004 to 2013.ResultsWe had 19,833 cases of orthopaedic surgeries, including 6,962 total joint arthroplasties in the last decade. They have increased year by year (r=0.9, p