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Fracture pattern exhibited by the specimens after fatigue loading of the spine. After testing there was a total of seven re-fractures in L3 as well as ten adjacent fractures in L2. A combination of fractures occurred in L2 + L3 two times and in L3 + L4 once. Fractures of L4 were rare with only two fractures occurring
| Group | L2 | L2 + 3 | L3 | L3 + 4 | L4 |
|---|---|---|---|---|---|
| Native | 2 | 2 | 1 | 0 | 0 |
| PMMA | 3 | 0 | 1 | 0 | 1 |
| Modified PMMA | 3 | 0 | 2 | 1 | 0 |
