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Table 2 Comparison of the two groups of cups with migration > 1 mm and cups with migration < 1 mm.
| Migration > 1 mm | Migration < 1 mm | |||
|---|---|---|---|---|
| Number | 6 | 101 | ||
| Male | 2 | 34 | ||
| Female | 4 | 62 | ||
| Right side | 4 | 51 | ||
| Left side | 2 | 50 | ||
| Age (years) | 64.5 | ± 23.9 | 62.9 | ± 15.4 |
| Size (cm) | 162 | ± 6.0 | 168 | ± 10.0 |
| Weight (kg) | 76.8 | ± 20.3 | 66.9 | ± 18.0 |
| BMI (points) | 29.7 | ± 9.4 | 27.2 | ± 5.7 |
| Primary surgery | 5 | 98 | ||
| Revision surgery | 1 | 3 | ||
| Follow-up (years) | 2.5 | ± 1.8 | 2.6 | ± 1.7 |
| Alpha Lock Plus | ||||
| Implant | 6 | 68 | ||
| Duraloc | ||||
| Implant | 0 | 33 | ||
| Cup size (mm) | 53.0 | ± 5.5 | 53.3 | ± 3.3 |
| Ball size (mm) | 31.3 | ± 1.6 | 30.8 | ± 2.1 |
| Screws (number) | 2.5 | ± 1.2 | 2.0 | ± 0.3 |
| Screws (length) | 25.0 | ± 8.3 | 33.2 | ± 6.6 |
| Cup inclination (°) | 52.6 | ± 11.2 | 39.2 | ± 7.3 |
| Cup anteversion (°) | 12.6 | ± 7.2 | 16.7 | ± 5.6 |
