Table 1.
Retrieval demographics (n = 70)
| Retrieval characteristic | Number |
|---|---|
| Reason for revision | |
| Septic loosening | 32 |
| Aseptic loosening | 23 |
| Periprosthetic fracture | 7 |
| Stem loosening and lysis | 2 |
| Stem subsidence | 1 |
| Unknown | 5 |
| Head diameter (mm) | |
| 28 | 20 |
| 32 | 24 |
| 36 | 17 |
| 38 | 1 |
| 40 | 3 |
| 42 | 2 |
| 46 | 1 |
| 48 | 1 |
| 50 | 1 |
| Manufacturer | |
| Zimmer (Warsaw, IN, USA) | 33 |
| DePuy (Warsaw, IN, USA) | 15 |
| Stryker (Mahwah, NJ, USA) | 2 |
| Wright Medical Technology (Memphis, TN, USA) | 6 |
| Smith & Nephew (Memphis, TN, USA) | 6 |
| Richards (Memphis, TN, USA) | 4 |
| Howmedica (Rutherford, NJ, USA) | 1 |
| Sulzer Medica (Winterthur, Switzerland) | 1 |
| Biomet (Warsaw, IN, USA) | 1 |
| LINK (Hamburg, Germany) | 1 |
| Bearing surface | |
| Metal-on-polyethylene | 59 |
| Metal-on-metal | 6 |
| Hemiarthroplasty | 5 |
| Trunnion material | |
| CoCr alloy | 37 |
| Ti4Al6V alloy | 33 |
| Nominal trunnion size | |
| 12/14 | 64 |
| 14/16 | 3 |
| V40™ (Stryker, Mahwah, NJ, USA) | 2 |
| C-Taper | 1 |