Research Article
Optimizing Acetabular Component Bone Ingrowth: The Wedge-Fit Bone Preparation Method
Table 2
Failures and complications.
| Failure Type | Group 1 | Group 2 | P value |
| # Cases | 1496 | 1565 | - - |
| (1) Revisions | | | |
| (a) Failure of Acetabular Ingrowth (<2 years) | 7 (0.5%) | 1 (<0.1%) | 0.0271 |
| (b) Adverse Wear | 3 (0.2%) | 0 (0.0%) | 0.0735 |
| (c) Late Acetabular Loosening (>2 years) | 2 (0.1%) | 0 (0.0%) | 0.1443 |
| (d) Acetabular Component Shift | 1 (<0.1%) | 1 (<0.1%) | 0.9681 |
| (2) Unrevised Cup shift | 16 (1.1%) | 7 (0.4%) | 0.0424 |
| (3a) Unexplained pain (>2 years, latest F/U) | 31 (2.2%) | 21 (2.6%) | 0.1031 |
| (3b) Unexplained pain (2-4 years, peak pain) | 39 (2.6%) | 20 (1.3%) | 0.0061 |
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