presacral neurectomy

例句：

1. 1. This surgical procedure is often performed to treat chronic low back pain.
   这种外科手术通常用于治疗慢性下背痛。
2. 2.The patient underwent a presacral neurectomy to alleviate the pressure on her sciatic nerve.
   患者接受了骶前神经切除术，以缓解对她的坐骨神经的压力。
3. 3. The success of this surgery depends on the precise removal of the affected nerve tissue.
   这次手术的成功取决于精确地移除受影响的神经组织。