Abstract

BackgroundThere is no national joint replacement registry in the country of Asia and reports of national outcomes of joint replacement in Asia as yet. Therefore, this study was then to report a national data of the number of hip replacements, incidence rate, demographic characteristics of hip replacement patients, and short-time survival rate after hip replacement of Han Chinese in Taiwan.MethodsWe analyzed 105,688 cases of hip replacements (including primary partial hip replacement, primary total hip replacement and revision of hip replacement) from National Health Insurance research database between 1996 and 2004. The survival rate of primary hip replacement was estimated for each disease by the Kaplan-Meier method.ResultsAverage annual number of primary partial hip replacement and primary total hip replacement were 4,257 and 6,206 cases, respectively. The most two common diagnosis of primary partial hip replacement were femoral neck fractures (73.6%, 34% men, mean age 76 years) and avascular necrosis (18.0%, 84% men, mean age 48 years). In primary total hip replacements, the most two common diagnosis were avascular necrosis (46.9%, 79% men, mean age 50 years) and osteoarthrosis (41.6%, 43% men, mean age 60 years). Both the number of primary partial hip replacements and primary total hip replacements increased steadily between 1996 and 2004. The cumulative survival of primary partial hip replacements and primary total hip replacements in all patients were 93.97% and 79.47% in 9 years follow-up, respectively.ConclusionAvascular necrosis is the main disease in total hip replacement in Taiwan. The epidemiology of hip diseases was different between Han Chinese (in Taiwan) and Caucasian and the number of hip replacements increased substantially in Taiwan between 1996 and 2004.

Highlights

  • There is no national joint replacement registry in the country of Asia and reports of national outcomes of joint replacement in Asia as yet

  • In order to survey the results of hip replacement surgery, we analyzed 105,688 cases of registry for contracted medical facilities and inpatient expenditures by admissions from National Health Insurance (NHI) research database between 1996 and 2004, on the basis of the International Classification of Disease, Ninth Revision, Clinical Modification (ICD-9-CM) code for total hip replacement (THR) (81.51), partial hip replacement (PHR) (81.52) and revision of hip replacement (81.53) listed as the major operation

  • The main indication for primary PHR and THR in Taiwan was femoral neck fractures (FNF), approximately 42.6% of the index operations were performed due to FNF

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Summary

Introduction

There is no national joint replacement registry in the country of Asia and reports of national outcomes of joint replacement in Asia as yet. National joint replacement registry is a good solution to record and publish the information for the orthopaedic community on the outcome of joint replacement surgery. In Taiwan, there is no official report related to joint replacement like the distribution of diseases between men and women, and survival rate, etc. No one could fully understand the distribution of diseases between men and women, and survival rate in whole Taiwan

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