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
经孔切开术，松解骶1、骶2经根。
（curette
复数）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经孔切开术，松解骶1、骶2经根。
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