Table 3. Descriptive statistics.
| Mean measures | Variable Standard deviation | N | |
|---|---|---|---|
| Pre-op (mm) | 4,1 | 2,3 | 15 |
| Post-op (mm) | 9,4 | 1,62 | 15 |
| 6 months (mm) | 7,3 | 2,03 | 15 |
| 1 year (mm) | 7 | 1,76 | 13 |
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