Perioperative medicine & outcomes
Trends in comorbidities and complications among patients undergoing elective total hip and knee arthroplasty in the USA
Authors' conclusion
Compared with previous trend analyses of patients having total hip or knee arthroplasty, the present study shows: an increasing rate of outpatient surgeries; increasing numbers of arthroplasty procedures in high comorbidity burden groups; and an increase incidence of certain serious postoperative complications.
Study context
- Population
- Patients undergoing elective primary total hip or knee arthroplasty, US, 2016–2021
- Exposure
- Total hip arthroplasty vs Total knee arthroplasty
- Outcome
- Trends in patient and peri-operative care characteristics and complications, 2016–2021
Methodological detailsUS
- US
Main finding
As reported in the abstract
- Patient median age increased; demographic composition consistent
- Shift towards outpatient procedures; one in five performed as outpatient in 2021
- Median hospital LOS decreased by 1 day for both procedures
- Parallel increasing procedure numbers in patients without comorbidities and with ≥ 3 comorbidities
Observational data: associations, not effects.
Further findings
| Outcome | Total hip arthroplasty | Total knee arthroplasty |
|---|---|---|
| Postoperative mortality trend (events per 1000 inpatient days) · 2016–2021 | 0.08 to 0.15 events per 1000 inpatient days | 0.09 to 0.33 events per 1000 inpatient days |
| p | p = 0.037 | p = 0.149 |
Postoperative mortality trend (events per 1000 inpatient days) · 2016–2021
- Increased significantly for total hip but not total knee arthroplasty
Original publication
Trends in comorbidities and complications among patients undergoing elective total hip and knee arthroplasty in the USA. Anaesthesia. Published 5 January 2025. doi:10.
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