Summary of Background Data. Physiotherapy reduces disability in chronic back pain, but there are seeral forms of physiotherapy and it is unclear which is most effectie or cost effectie.

• 背景资料概述：物理治疗确定可以治疗后腰痛疾病，但是目前有多种物理治疗方法，而且我们仍不清楚究竟哪一种的疗效最好、性价比最高。