| despite having no symptoms | 4 | other |
| from april | 4 | temporal |
| after opening wedge osteotomy | 3 | temporal |
| knee → be → revised | 8 |
| knee → undergo → revision | 3 |
| negative | neutral | positive |
| 0.205 | 0.743 | 0.051 |
| Raw frequency | 11 |
| Normalized frequency | 0.226 |
| Modifier score | 0.500 |
| Perplexity | 441.169 |