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。

Results Based on the extent, the injury was classified as concussion and hydropsia, contusion and hemorrhage, compress and twist, complete or incomplete transsection of spinal cord.

结果按脊髓损伤程度分为脊髓震荡水肿、挫裂出血、受压扭曲及脊髓完全、不完全横断。