Abstract
Background: The purpose of this study is to report healthcare payer costs of dual-mobility (DM) and large femoral head (LFH) constructs in revision total hip arthroplasties (THAs). Methods: A Markov model was constructed to analyze costs of re-interventions incurred by Medicare and private payers over a 3-year time horizon in patients who underwent unilateral revision THA with DM (n = 126) or LFH (n = 176) implants. Model states and probabilities were derived from prospectively collected registry data. Medicare costs were estimated as the weighted-average national Medicare payment for revision THA. Private payer costs were estimated by using a multiplier of Medicare costs. Results: Over a 3-year period following revision THA, re-interventions were performed in 11 (9%) DM patients and 34 (19%) LFH patients, costing $263-$1898 in DM THAs and $1285-$3946 in LFH THAs for Medicare. When compared to LFH implants, DM constructs were less costly to Medicare and private payers, resulting in cost differentials of $1536 and $2611, respectively. Conclusions: At mid-term follow-up, DM constructs utilized in revision THAs were associated with 11% lower absolute risk of re-intervention and payer savings of $1500-$2500 per case when compared to LFH constructs. Level of Evidence: Economic and decision analysis, Level III.
Original language | English (US) |
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Pages (from-to) | 260-264 |
Number of pages | 5 |
Journal | Journal of Arthroplasty |
Volume | 34 |
Issue number | 2 |
DOIs | |
State | Published - Feb 2019 |
Keywords
- cost
- dislocation
- dual-mobility constructs
- instability
- large femoral heads
- total hip arthroplasty
ASJC Scopus subject areas
- Orthopedics and Sports Medicine