Clinical and Radiologic Characteristics
| Characteristic | HA graft group | Autograft group |
|---|---|---|
| Number of patients | 6 | 6 |
| Age (y) | 61 ± 15 | 60 ± 13 |
| Sex (M/F) | 1/5 | 2/4 |
| Single-level operation | 6 | 6 |
| Radiolucent line | 6 | 0 |
| Interval until disappearance of radiolucent line (mo) | 7.3 ± 1.5 | — |
| Uptake ratio | ||
| 2-wk | 2.04 ± 0.22 | 2.00 ± 0.10 |
| 1-mo | 2.33 ± 0.20 | 2.15 ± 0.07 |
| 2-mo | 1.65 ± 0.05 | 1.64 ± 0.09 |
| 3-mo | 1.67 ± 0.03 | 1.62 ± 0.04 |
| 6-mo | 1.64 ± 0.03 | 1.61 ± 0.05 |
— = no lucent stripe was seen at any time.
Values are mean ± SD.