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Time trends in total ankle arthroplasty in the USA: a study of the National Inpatient Sample.


ABSTRACT: The objective of this study was to assess the time trends in utilization, clinical characteristics, and outcomes of patients undergoing total ankle arthroplasty (TAA) in the USA. We used the Nationwide Inpatient Sample (NIS) data from 1998 to 2010 to examine time trends in the utilization rates of TAA. We used the Cochran Armitage test for trend to assess time trends across the years and the analysis of variance (ANOVA), Wilcoxon test, or chi-squared test (as appropriate) to compare the first (1998-2000) and the last time periods (2009-2010). TAA utilization rate increased significant from 1998 to 2010: 0.13 to 0.84 per 100,000 overall, 0.14 to 0.88 per 100,000 in females, and from 0.11 to 0.81 per 100,000 in males (p??0.05). The utilization rate of TAA increased rapidly in the USA from 1998 to 2010, but post-arthroplasty mortality rate was stable. Underlying diagnosis and medical comorbidity changed over time and both can impact outcomes after TAA. Further studies should examine how the outcomes and complications of TAA have evolved over time.

SUBMITTER: Singh JA 

PROVIDER: S-EPMC4258518 | biostudies-literature | 2016 Jan

REPOSITORIES: biostudies-literature

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Time trends in total ankle arthroplasty in the USA: a study of the National Inpatient Sample.

Singh Jasvinder A JA   Ramachandran Rekha R  

Clinical rheumatology 20140607 1


The objective of this study was to assess the time trends in utilization, clinical characteristics, and outcomes of patients undergoing total ankle arthroplasty (TAA) in the USA. We used the Nationwide Inpatient Sample (NIS) data from 1998 to 2010 to examine time trends in the utilization rates of TAA. We used the Cochran Armitage test for trend to assess time trends across the years and the analysis of variance (ANOVA), Wilcoxon test, or chi-squared test (as appropriate) to compare the first (1  ...[more]

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