Singular neurectomy (posterior ampullary nere transsection) and posterior semicircular canal occlusion are the 2 specific techniques used in intractable BPP surgery.

单纯神经切除术（后壶腹神经）和后半规管闭塞术是应用于难治性良性阵发性位置性眩晕的两种特殊的手术治疗技术。

Reerse-angled curettes and a burr were used to create a foraminotomy at S2, which allowed the S1 and S2 nere roots to be mobilized.

用反角刮匙和电钻行骶2神经孔切开术，松解骶1、骶2神经根。