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| Group | Preoperative | 1st wk | 2nd wk | 1st month | 3rd month |
|---|---|---|---|---|---|
| Control | 8.0 ± 1.2 | 14.2 ± 2.1 | 16.0 ± 2.7 | 19.0 ± 7.0 | 22.5 ± 6.5 |
| Intervention | 8.2 ± 1.5 | 3.2 ± 2.0 | 15.8 ± 2.5 | 20.0 ± 8.0 | 23.0 ± 6.0 |
| P-value | 0.086 | 0.080 | 0.377 | 0.122 | 0.359 |
OA, Japanese Orthopaedic Association.
