| Group | Lin Tor+US | Fixed Tor | US | F* | p Value | |||
| ETC | ETC change, % | ETC | ETC change, % | ETC | ETC change, % | |||
| Preop (SD) | 2450 (298) | 2431 (287) | 2418 (283) | 0.944 | 0.351 | |||
| 7 days (SD) | 2297 (322) | −153 (132), −6.2 | 2277 (298) | −154 (109), 6.3 | 2132 (331) | −286 (106), −11.8 | 2.982 | 0.004 |
| 30 days (SD) | 2191 (343) | −259 (185), −10.6 | 2176 (320) | −255 (171), 10.5 | 2089 (349) | −329 (150), −13.6 | 3.346 | 0.001 |
*One-way ANOVA.
Fixed Tor, Fixed high Torsional amplitude group; Lin Tor+US, Linear Torsional combined with Ultrasound energy; US, Ultrasound mode.