Opioid consumption during hospitalisation among robotic-assisted, computer-assisted, and manual total hip arthroplasty: a retrospective cohort study
Authors' conclusion
Among those who consumed opioids, technology-assisted THA was associated with lower opioid consumption than MA-THA, primarily due to differences observed on POD 1.
Study context
- Population
- Patients undergoing unilateral elective THA, 2016–2023
- Participants
- 584,578 patients
- Exposure
- Computer-assisted and robotic-assisted vs manual THA
- Outcome
- Total opioid consumption during hospitalisation (any use; log consumption among opioid consumers)
- Follow-up
- During hospitalisation
Methodological detailsPremier Healthcare database, two-part mixed-effects models
- Premier Healthcare database
- Two-part mixed-effects models
Main finding
As reported in the abstract
Opioid consumption during hospitalisation
Odds ratio (95% CI)
CA-THA vs MA-THAany opioid consumption
0.87(0.80–0.95)
RA-THA vs CA-THAany opioid consumption
1.22(1.08–1.39)
Multiplicative effect
- CA-THA vs MA-THA · total consumption among opioid consumers; 2% lower
- 0.98 (95% CI 0.97–0.99)
- RA-THA vs MA-THA · total consumption among opioid consumers; 2% lower
- 0.98 (95% CI 0.97–0.99)
Observational data: associations, not effects.
Further findings
| Outcome | OR (95% CI) | |
|---|---|---|
| Opioid consumption on POD 1CA-THA vs MA-THA · any opioid consumption | 0.78 (0.74–0.83) | |
| Opioid consumption on POD 1RA-THA vs MA-THA · any opioid consumption | 0.84 (0.80–0.88) | |
| 0.512Odds ratio (log scale) |
| Outcome | Multiplicative effect (95% CI) |
|---|---|
| Opioid consumption on POD 1CA-THA vs MA-THA · among opioid consumers; 9% lower | 0.91 (0.90–0.93) |
| Opioid consumption on POD 1RA-THA vs MA-THA · among opioid consumers; 6% lower | 0.94 (0.93–0.96) |
- Opioid consumption on postoperative day (POD) 1: strongest effect observed on POD 1
Original publication
Opioid consumption during hospitalisation among robotic-assisted, computer-assisted, and manual total hip arthroplasty: a retrospective cohort study. BJA Open. Published 4 February 2026. doi:10.
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