2Frymoyer JW. Back pain and sciatica [J].N Engl J Med, 1988,318 (5) :291-300.
3Walker BF. The prevalence of low back pain : a systematic review of the literature from 1966 to 1998 [ J ]. J Spinal Disord, 2000,13 ( 3 ) : 205- 217.
4Parkkola R, Ryt~koski U, Kormano M. Magnetic resonance imaging of the discs and trunk muscles in patients with chronic low back pain and healthy control subjects [ J ]. Spine, 1993,18 (7) : 830-836.
5Panjabi MM. The stabilizing system of the spine. Part I. Function, dys- function, adaptation, and enhancement [J]. J spinal Disord, 1992,5 (4) :383-389.
6D'hooge R, Cagnie B, Crombez G,et al. Increased intramuscular fatty infiltration without differences in lumbar muscle cross-sectional area during remission of unilateral recurrent low back pain[J].Man Ther, 2012,17(6) :584-588.
7Hides J,Gilmore C, Stanton W, et al. Muhifldus size and symmetry a- mong chronic LBP and healthy asymptomatic subjects [J]. Man Ther, 2008,13 ( 1 ) :43-49.
8Wallwork TL, Stanton WR, Freke M, et al. The effect of chronic low back pain on size and contraction of the lumbar rnultifldus muscle [J]. Man Ther,2008,14(5 ) :496-500.
9Kamaz M, Kire~i D, Oguz H,et al. CT measurement of trunk muscle areas in patients with chronic low back pain[J]. Diagn Interv Radiol, 2007,13 (3) : 144-148.
10Roland M, Morris R. A study of the natural history of back pain. Part I:development of a reliable and sensitive measure of disability in low- back pain[J]. Spine,1983,8(2) :141-144.