90-day mortality stratified by underlying type of joint (hip vs knee vs both) and type of arthroplasty (primary vs revision vs both)* for elective surgery and all-comers.
| No. Studies** | Overall (all studies) (%) | Underlying Indication for Arthroplasty Elective (%) | All-comers† (%) | |
|---|---|---|---|---|
| Hip arthroplasty | 2,126/236,104 (0.9) | |||
| Primary hip | 2 | 395/46,007 (0.86) | 744/100,058 (0.74) | |
| Revision hip†† | 8 | 327/15,229 (2.15) | 38/3785 (1.0) | |
| Primary and revision combined | 6 | 884/73,750 (1.19) | 103/16,289 (0.63) | |
| Knee arthroplasty | 2,432/393,540 (0.62) | |||
| Primary knee | 8 | 508/78,745 (0.65) | 1,921/313,586 (0.61) | |
| Revision knee†† | 1 | — | 1/132 (0.76) | |
| Primary and revision combined | 1 | — | 3/1,209 (0.25) |
↵* Since only a few studies provided numbers separately for knee and hip arthroplasty, the mortality rates may not reflect overall rates, these studies being a subset of all studies included.
↵** One study could provide data for more than 1 group.
↵† All-comers included studies where all patients were included and those in which there was no clear description of included patients.
↵†† Revision numbers were often a subset of the mortality for the entire sample, frequently with primary arthroplasty constituting a large majority of cohort and high proportion of all deaths.