Table 2
Radiographic measurements of protrusio acetabuli with osteoarthritis compared to osteoarthritis control patients
| Variable | Osteoarthritis protrusion | Osteoarthritis control | P Value |
|---|---|---|---|
| Mean ± SD | Mean ± SD | ||
| Age | 66 ± 14 | 67 ± 12 | 0.9923 |
| Superior joint space (mm) | 4 ± 1 | 1 ± 1 | 0.0001 |
| Medial joint space (mm) | 3 ± 1 | 3 ± 2 | 0.2590 |
| Tonnis angle (°) | −14 ± 9 | 2 ± 6 | 0.0001 |
| Sharp’s angle (°) | 51 ± 10 | 53 ± 6 | 0.0140 |
| LCE angle (°) | 60 ± 8 | 36 ± 9 | 0.0001 |
| FH extrusion index (%) | 106 ± 13 | 68 ± 18 | 0.0001 |
| Neck shaft angle | 121 ± 5 | 130 ± 7 | 0.0001 |