结果放疗止痛总有效率为85 5 %，大分割剂量组因其生物剂量相对较高，放疗止痛效果明显优于常规放疗组。

Results the total curative rate of radiotherapy was 85.5%. The low fractional radiotherapy was better than the conventional radiotherapy, because of its higher biological dose.

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结果放疗起到了明显的止痛作用，常规分割放疗组与低分割放疗组止痛效果大致相同，无统计学意义（P＞0．05）。

Results Radiotherapy can relieve pain of bone metastases. Compared conventional fraction with hypofraction, no significant difference was found (P>0.05).

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