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Time to failure of titanium and tantalum acetabular cups
| Group | Time to failure | p Value | |
|---|---|---|---|
| Early (< 6 mo) | Late (≥ 6 mo) | ||
| Both groups | |||
| Titanium cup | 3 (17.7%) | 14 (82.4%) | 0.01 |
| Tantalum cup | 4 (80%) | 1 (20%) | |
| Major group | |||
| Titanium cup | 0 | 5 (100%) | 0.05 |
| Tantalum cup | 2 (66.7%) | 1 (33.3%) | |
| Minor group | |||
| Titanium cup | 3 (25%) | 9 (75%) | 0.05 |
| Tantalum cup | 2 (100%) | 0 | |
