The Epidemiology and National Trends of Bearing Surface Usage in Primary Total Hip Arthroplasty in Korea |
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Authors: | Pil Whan Yoon Jeong Joon Yoo Yunjung Kim Seungmi Yoo Sahnghoon Lee Hee Joong Kim |
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Institution: | Department of Orthopaedic Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.;*Department of Orthopedic Surgery, Seoul National University College of Medicine, Seoul, Korea.;†Office of Health Services Research, National Evidence-Based Healthcare Collaborating Agency, Seoul, Korea.;‡Medical Research Center, Seoul National University, Seoul, Korea. |
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Abstract: | BackgroundWe analyzed the data for primary total hip arthroplasty (THA) in the Korean nationwide database to assess (1) the epidemiology and national trends of bearing surface usage in THAs and (2) the prevalence of each type of bearing surface according to age, gender, hospital type, primary payer, and hospital procedure volume.MethodsA total of 30,881 THAs were analyzed using the Korean Health Insurance Review and Assessment Service database for 2007 through 2011. Bearing surfaces were sub-grouped according to device code for national health insurance claims and consisted of ceramic-on-ceramic (CoC), metal-on-polyethylene (MoP), ceramic-on-polyethylene (CoP), and metal-on-metal (MoM). The prevalence of each type of bearing surface was calculated and stratified by age, gender, hospital type, primary payer, and procedure volume of each hospital.ResultsCoC was the most frequently used bearing surface (76.7%), followed by MoP (11.9%), CoP (7.3%), and MoM (4.1%). The proportion of THAs using a CoC bearing surface increased steadily from 71.6% in 2007 to 81.4% in 2011, whereas the proportions using CoP, MoP, and MoM bearing surfaces decreased. The order of prevalence was identical to that in the general population regardless of age, gender, hospital type, primary payer, and hospital procedure volume.ConclusionsThe trends and epidemiology of bearing surface usage in THAs in Korea are different from those in other countries, and the CoC bearing surface is the most prevalent articulation. In future, the results of a large-scale study using nationwide data of THAs involving a CoC bearing surface will be reported in Korea. |
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Keywords: | Epidemiology Hip Arthroplasty Cross-sectional studies |
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