Table 7.
Results after revision of metal-on-metal bearing surfaces
| Study | Number of hips (patients) | Mean followup (years; range) | Indication for revision | Dislocation | Aseptic cup loosening | Infection | Survival rate |
|---|---|---|---|---|---|---|---|
| Munro et al. 2014 [32]; large-head MoM THA | 32 (30) | 2.1 (0.8–4) | 19 ALTR, 3 deep infection, 10 aseptic loosening | 9 (28%) | 4 of 17 titanium components; 0 tantalum | 0 | 81% at 2.1 years |
| Wyles et al. 2014 [42]; THA | 37 (37) | 2.75 (2–6.75) | 19 aseptic loosening, 8 ALTR, 4 periprosthetic fracture, 3 impingement, 2 dislocation, and 1 unknown origin |
0 | 0 | 3 (8.1%) | 95% at 2 years; 92% at last followup |
| Stryker et al. 2015 [38]; monoblock THA | 114 (107) | 1.2 (0–10.22) | 58 metallosis, 31 aseptic loosening, 8 infection, 7 pain, 5 malposition, 3 instability, 2 impingement, 1 periprosthetic fracture |
4% | 6% | 6% | 84% at last followup |
| Schmolders et al. 2011 [37]; 12 HRA, 1 THA | 13 (13) | 1.75 (1–3.33) | 8 groin pain, 2 lateral pain, 3 dislocation or instability | 0 | NR | 0 | 100% at last followup |
MoM = metal-on-metal; HRA = hip resurfacing arthroplasty; ALTR = adverse local tissue reaction; NR = not reported.