Table 4.
Comparison to study cohorts
| Study | Liner inserted at reoperation | Number in cohort | Number of living patients at followup | Lost to followup | Mean age at primary surgery (years) | Mean age at index surgery (liner exchange) (years) | Mean age at followup (years) | Mean length of followup (years) | Number of failures | Survival from revision | Percent dislocations |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Beaulé et al. (2004) [1] | 17 polyethylene, 15 metal-bearing | 32 hips (30 patients) | NR | 0 patients | 45.1 (20–84) | 53.7 (range, 31–85) | NR | 5.1 (range, 2.0–8.7) | 6 hips (4 aseptic loosening) | 78% for revision for any reason | 22% (7 hips) |
| Springer et al. (2005) [12] | All polyethylene | 17 hips (17 patients) | 17 hips (17 patients) | 0 patients | 63.3 | 68.9 (range, 45–90) | 71.6 | 2.7 (range, 2–5.2) | 1 hip (instability) | NR | 18% (3 hips) |
| Khanuja et al. (2010) [10] | All polyethylene (nonmodular shells) | 28 hips (26 patients) | 21 hips (21 patients) | 4 patients (6 hips) | 48.9 | 54.3 | 60.1 | 5.8 | 4 hips (3 aseptic loosening) | 81% at 5 years | 11% (3 hips) |
| Yoon et al. (2005) [14] | Metal-inlay polyethylene | 39 hips (39 patients) | NR | 0 patients | 47.4 | 55 (range, 32–74) | 58 | 2.8 (range, 2–9) | 1 (aseptic loosening) | NR | 5% (2 hips) |
| Current study | All polyethylene | 31 hips (30 patients) | 28 hips (27 patients) | 1 patient (1 hip) | 41.0 (range, 24.3–64.8) | 51.8 (range, 33.3–77.5) | 55.9 (range, 39.2–83.0) | 5.3 (range, 2.2–10.9) | 0 | 100% | 6% (2 hips) |
NR = not reported.