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| Parameter Evaluated | Before Treatment | 1 Month Follow up | 3 Months Follow up | |
| True laser | Anterior flexion | 28±15 | 13±12 | 11±11 |
| Lateral flexion | 37±12 | 20±12 | 18±12 | |
| Sham laser | Anterior flexion | 31±8 | 21±8 | Not evaluated |
| Lateral flexion | 37±8 | 34±9 | Not evaluated |
