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Patterns of necrobiosis in the study cohort (Fisher's exact test)
| Villous necrobiosis | Superficial necrobiosis | Deep necrobiosis | |
|---|---|---|---|
| Joint | |||
| Hip (n = 19) | 10 | 13 | 7 |
| Knee (n = 9) | 3 | 4 | 1 |
| p-value | 0.4 | 0.4 | 0.2 |
| r-value | –0.18 | –0.23 | –0.27 |
| Metal wear | |||
| Metallosis present n = 7 | 4 | 6 | 2 |
| Metal wear invisible n = 21 | 9 | 11 | 6 |
| p-value | 0.7 | 0.2 | 1.0 |
| r-value | 0.12 | 0.30 | 0.0 |
