主要观察指标：两组治疗后下肢静息痛、麻木无力、间歇性跛行、行走距离的改善情况，以及不良反应。
MAIN OUTCOME MEASURES: the improvement in rest pain, numbness, intermittent limp and walking distance of the lower limbs after the treatment in the two groups as well as the adverse effects.
主要观察指标：两组治疗后下肢静息痛、麻木无力、间歇性跛行、行走距离的改善情况，以及不良反应。
MAIN OUTCOME MEASURES: the improvement in rest pain, numbness, intermittent limp and walking distance of the lower limbs after the treatment in the two groups as well as the adverse effects.
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