The EMG average amplitude was increased with the increase of the trunk rotation angle without significant difference (P>0.05).
随躯干旋转角度的增加，竖脊肌肌电幅度呈升高的趋势，但差异无统计学意义（P＞0．05）。
Using coordinate rotation based on P-wave particle vibration, aligning the source components at different depths have been achieved.
采用P波粒子振动的坐标旋转，可使不同深度的震源分量对齐。
Results After cervical spine anterior operations, pressure of the adjacent facet joints increased. The differences were significant in extension and axial rotation (P< 0.05).
结果颈椎前路手术后，邻近节段关节突关节内的压力增加，以后伸和左右旋转时最为明显，差异有显著性意义（P<0.05）。
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