Table 1 ROMs of intact FE model and implanted FE models with and without fusion for all motion segments
Motion | Model | L1–L2 (Deg) | L2–L3 (Deg) | L3–L4 (Deg) | L4–L5 (Deg) | Mom. (Nm) | L1–L5 stiffness (Nm/Deg) |
|---|---|---|---|---|---|---|---|
Flexion | INT | 4.08 (100%) | 3.15 (100%) | 4.97 (100%) | 4.90 (100%) | 7.5 (100%) | 0.44 (100%) |
IMP | 4.93 (121%) | 3.82 (121%) | 5.55 (112%) | 2.86 (58%) | 10.3 (137%) | 0.60 (136%) | |
IMPF | 5.46 (134%) | 4.26 (135%) | 6.58 (132%) | 0.94 (19%) | 12.3 (164%) | 0.71 (161%) | |
Extension | INT | 2.61 (100%) | 2.06 (100%) | 2.58 (100%) | 3.73 (100%) | 7.5 (100%) | 0.68 (100%) |
IMP | 3.08 (118%) | 2.44 (118%) | 3.32 (129%) | 2.22 (60%) | 9.0 (120%) | 0.81 (119%) | |
IMPF | 3.47 (133%) | 2.76 (134%) | 4.00 (155%) | 0.87 (23%) | 10.3 (137%) | 0.93 (137%) | |
Lateral bending | INT | 4.36 (100%) | 2.85 (100%) | 5.16 (100%) | 5.46 (100%) | 7.5 (100%) | 0.42 (100%) |
IMP | 5.27 (121%) | 3.54 (124%) | 6.23 (121%) | 2.98 (55%) | 9.5 (127%) | 0.53 (126%) | |
IMPF | 5.84 (134%) | 3.97 (139%) | 6.95 (135%) | 1.04 (19%) | 10.8 (144%) | 0.61 (145%) | |
Axial rotation | INT | 2.10 (100%) | 1.74 (100%) | 2.08 (100%) | 2.24 (100%) | 7.5 (100%) | 0.92 (100%) |
IMP | 2.04 (97%) | 1.69 (97%) | 2.31 (111%) | 2.14 (96%) | 7.2 (96%) | 0.88 (96%) | |
IMPF | 2.69 (128%) | 2.26 (130%) | 3.06 (147%) | 0.30 (13%) | 10.0 (133%) | 1.20 (130%) |