Musculus quadratus lumborum

例句：

1. 1. The patient's condition worsened significantly after the surgery.
   手术后，患者的病情明显恶化。
2. 2. The doctor advised him to avoid heavy lifting for a few days.
   医生建议他在接下来的几天内避免重体力劳动。
3. 3. During the operation, the surgeon found a significant amount of scar tissue in the area.
   手术中，外科医生发现该区域有大量的瘢痕组织。