| Preoperatire | Postoperatire | Difference | ||
|---|---|---|---|---|
| Pain | 2 | 6 | 4 × 2 = 8 | = 8 good result |
| Mobility | 5 | 1 | −4 | |
| Ability to walk | 3 | 5 | 2 × 2 = 4 | |
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