musculus sacrococcygeus

例句：

1. 1.He suffered from sciatica, which affected his lower back and leg.
   他患有坐骨神经痛，这影响了他的下背部和腿部。
2. 2.The doctor advised him to exercise regularly to prevent sciatica.
   医生建议他定期锻炼以防止坐骨神经痛。
3. 3.Sciatica can be caused by a herniated disc or spinal stenosis, among other conditions.
   坐骨神经痛可以由椎间盘突出或脊柱狭窄等疾病引起。