Table 3.
Relationship between primary diagnosis and timing of revisiona
| Diagnosis | Number of hips requiring revision | Timing of revision | |||
|---|---|---|---|---|---|
| <2 years (%) | 2–5 years (%) | 5–10 years (%) | >10 years (%) | ||
| Osteoarthritis | 111 | 27 (24.3) | 27 (24.3) | 24 (21.6) | 33 (29.8) |
| Inflammatory arthritis | 20 | 2 (10) | 0 (0.00) | 7 (35) | 11 (55) |
| Osteonecrosis | 62 | 33 (53.2) | 9 (14.5) | 8 (12.9) | 12 (19.4) |
| Dysplasia | 25 | 9 (36) | 2 (8) | 7 (28) | 7 (28) |
| Post-traumatic arthritis | 14 | 8 (57.1) | 0 (0.00) | 2 (14.3) | 4 (28.6) |
| Other | 5 | 0 (0.00) | 1 (20) | 1 (20) | 3 (60) |
| Total | 237 | 79 (33.3) | 39 (16.5) | 49 (20.7) | 70 (29.5) |
aCause of failure is given in the table as the number of hips, with the percentage given in parentheses