Disc von Mises stress (MPa) by procedure type.
| Spine Segments | Healthy | LAM | LAM + FFX (Unfused) | LAM + FFX (Fused) | LAM + PS (Unfused) | LAM + PS (Fused) |
| L2-L3 | 0.45 | 0.45 | 0.53 | 0.55 | 0.55 | 0.56 |
| L3-L4 | 0.35 | 0.35 | 0.40 | 0.42 | 0.41 | 0.42 |
| L4-L5 | 0.16 | 0.15 | 0.14 | 0.03 | 0.08 | 0.04 |
| L5-S1 | 0.32 | 0.32 | 0.39 | 0.41 | 0.42 | 0.42 |