Table 3.

Failure rate (%) of all index revisions, by category of revision and by reason for index revision

Factor	5-year failure rate (95% CI)	10-year failure rate (95% CI)
All index revisions with endpoint re-revision for
any reason	22 (19–25)	28 (24–33)
dislocation	3.8 (2.6–5.2)	3.8 (2.6–5.2)
infection	7.5 (5.9–9.3)	7.8 (6.1–9.6)
acetabular loosening	3.1 (2.1–4.4)	7.0 (4.1–11)
femoral loosening	2.3 (1.5–3.5)	2.7 (1.6–4.1)
Revisions category
total revision	15 (11–21)	18 (13–21)
major partial revision	16 (13–20)	22 (17–27)
minor partial revision	31 (24–39)	50 (32–73)
Reason for index revision
infection	45 (37–55)	45 (37–55)
dislocation	22 (16–29)	29 (20–41)
acetabular loosening	22 (16–33)	31 (21–44)
femoral loosening	18 (13–26)	22 (14–34)