Table 6. Previous Reports on Revision with Navigation.
| Study | Navigation | Target angle | Observation period (mo) | Case | Total/cup-only revision | Accuracy | Dislocation |
|---|---|---|---|---|---|---|---|
| Nakamura et al.18) | CT-based navigation | Radiographic abduction angle, 40°; radiographic anteversion, 15° | - | 60 Cases (30 revision THA and 30 primary THA) | - | - | - |
| Yun et al.22) | Image-free navigation system (OrthoPilot THA navigation system 3.1; B. Braun Aesculap, Tuttlingen, Germany) | Radiographic abduction angle, 40° ± 10°; radiographic anteversion, 15° ± 10° | 17.1 ± 5.3 (12–24) | 28 Cases (16 THA and 12 revision THA) | - | Radiographic abduction angle, 40.5° ± 4.6° (32°–50°); radiographic anteversion, 19.4° ± 4.2° (8°–25°) | None |
| Kuroda et al.19) | CT-based hip, version 1.0 (Stryker Navigation, Freiburg, Germany) | Anatomical abduction angle, 40°; anatomical anteversion, 20° (38.3° abduction and 12.7° anteversion in radiography) | - | 30 Hips in 26 patients | Total, 14 cases; cup only, 16 cases | Radiographic abduction angle, 35.7° ± 3.1° (31.3°–43.6°); radiographic anteversion, 24.3° ± 8.0° (12.7°–44.0°) | - |
| Chang et al.20) | Imageless computer-assisted navigation (VectorVision; BrainLab, Munich, Germany) | Radiographic abduction angle, 40° ± 10°; Widmer combined anteversion, 37° ± 10° | 80.7 (54–109) | 40 Patients (24 males and 16 females) | Total, 30 cases; cup-only, 10 cases | Radiographic abduction angle, 42.3° ± 3.1° (32.1°–48.2°); radiographic anteversion, 25.0° ± 2.9° (16.9°–29.5°); combined anteversion, 36.1° ± 3.4° (27.2–42.9); safe zone, 100% | None |
| This study | CT-based navigation (VectorVision, BrainLab) | Radiographic abduction angle, 40°; radiographic anteversion, 15°; combined anteversion, 37° | 42.2 ± 23.2 | Revision THA (23 cases) | Total, 23 cases | Radiographic abduction angle, 39.97° ± 3.69°; radiographic anteversion, 18.77° ± 4.83°; combined anteversion, 41.23° ± 8.94°; safe zone, 84.7% | 4.30% |
Values are presented as mean ± SD, mean ± SD (range), or mean (range).
CT: computed tomography, THA: total hip arthroplasty, SD: standard deviation.