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Primary vs Conversion Total Hip Arthroplasty: A Cost Analysis.

Garwin Chin1, David J Wright1, Nimrod Snir2

  • 1University of California Irvine Medical School, Irvine, California.

The Journal of Arthroplasty
|September 22, 2015
PubMed
Summary
This summary is machine-generated.

Conversion total hip arthroplasty (THA) is significantly more costly than primary THA, with higher hospital operating and direct costs. This study highlights the need to reclassify conversion THA due to its increased resource use.

Keywords:
conversion total hip arthroplastycostimplant costprimary total hip arthroplastyrevision total hip arthroplasty

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Area of Science:

  • Orthopedic Surgery
  • Health Economics

Background:

  • Rising hip fracture incidence necessitates more conversion total hip arthroplasty (THA).
  • Current healthcare policy bundles conversion THA with primary THA, despite known higher complication rates.
  • This study investigates the economic implications of conversion THA versus primary THA.

Purpose of the Study:

  • To compare the treatment costs of conversion THA with primary THA.
  • To test the hypothesis that conversion THA incurs higher costs and resource utilization.

Main Methods:

  • A comparative study included 51 conversion THA and 105 matched primary THA patients.
  • Regression analysis compared natural log-transformed costs, controlling for patient demographics and comorbidities.
  • Analysis of variance (ANOVA) analyzed conversion THA subgroups by etiology.

Main Results:

  • Conversion THA demonstrated significantly higher costs across multiple metrics.
  • Hospital operating direct costs were 29.2% greater for conversion THA.
  • Total hospital costs were 26.4% greater for conversion THA compared to primary THA.

Conclusions:

  • Conversion THA incurs significantly greater costs and resource use than primary THA.
  • The findings support the need for reclassification of conversion THA in healthcare policy.
  • Reclassification is crucial to avoid disincentives for treating complex conversion THA patients.