Table 2.
Radiographic and clinical outcomes
| Variable measure | TMC group (32 patients) | n-HA/PA66 group (35 patients) | P |
|---|---|---|---|
| Subsidence (mm) | |||
| One-year post-op | 2.5 ± 1.0 | 1.2 ± 0.8a | 0.0001 |
| Four-year post-op | 2.9 ± 1.1 | 1.5 ± 0.9a | 0.0001 |
| SSA (°) | |||
| Pre-op | 5.4 ± 5.2 | 5.5 ± 4.5 | 0.955 |
| Immediately post-op | 8.7 ± 3.8 | 8.8 ± 3.6 | 0.786 |
| One-year post-op | 7.1 ± 3.6 | 7.8 ± 3.4 | 0.567 |
| Four-year post-op | 6.5 ± 3.3 | 7.6 ± 3.0 | 0.235 |
| VAS (point) | |||
| Pre-op | 7.1 ± 1.4 | 7.1 ± 1.7 | 0.747 |
| One-year post-op | 3.1 ± 1.4 | 2.3 ± 1.5a | 0.026 |
| Four-year post-op | 2.2 ± 1.3 | 1.3 ± 1.0a | 0.034 |
| JOA (point) | |||
| Pre-op | 8.4 ± 2.4 | 8.5 ± 2.8 | 0.684 |
| One-year post-op | 15.0 ± 1.8 | 15.9 ± 1.3 | 0.034 |
| Four-year post-op | 14 ± 1.9 | 15.3 ± 1.8a | 0.007 |
TMC titanium mesh cage, n-HA/PA66 nano-hydroxyapatite/polyamide-66, op operation, SSA segmental sagittal alignment, VAS visual analogue scale, JOA Japanese Orthopedic Association scale
a TMC group vs. n-HA/PA66 group, p value less than 0.05