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Locking screws that were evaluated for fatigue life
| Manufacturer | Diameter (mm) | Material |
| Ace | 4.5 | Ti-6Al-4V |
| Biomet | 4.0 | Ti-6Al-4V |
| 5.0 | ||
| Howmedica-Alta | 3.7 | TMZ |
| 5.0 | ||
| Russell-Taylor | 4.5 | 316 SS |
| 5.0 | ||
| Synthes | 3.9 | Ti-6Al-7Nb |
| 4.9 | ||
| S&N – Trigen | 5.0 | Ti-6Al-4V |
