Table 1.
Preoperative data on revision total hip arthroplasty patients suffering of aseptic loosening
| Characteristic | Cases | Percentage (%) |
|---|---|---|
| Gender | ||
| Male | 8 | 66.7 |
| Female | 4 | 33.3 |
| Agea | ||
| ≤50 | 2 | 16.7 |
| 51 ∼ 60 | 3 | 25.0 |
| 61 ∼ 70 | 3 | 25.0 |
| 71 ∼ 80 | 1 | 25.0 |
| 81 ∼ 90 | 1 | 8.3 |
| Reasons for arthroplasty | ||
| Femur neck fracture | 5 | 41.7 |
| Femur head necrosis | 5 | 41.7 |
| Acetabulum fracture | 2 | 16.7 |
| Follow-upb | ||
| <1 | 1 | 8.3 |
| 1 ∼ 3 | 1 | 8.3 |
| 3 ∼ 5 | 2 | 16.7 |
| 5 ∼ 7 | 0 | 0 |
| 7 ∼ 9 | 4 | 33.3 |
| 9 ∼ 11 | 3 | 25.0 |
| ≥11 | 1 | 8.3 |
| Loosened parts | ||
| Cup | 2 | 16.7 |
| Stem | 1 | 8.3 |
| Both | 9 | 75.0 |
All the patients were clinically diagnosed as aseptic loosening according to the manifestation, radiology and aetiology
aAge of the patients in years
bTime intervals between the primary arthroplasty and the revision surgery in years