Bogduk N, Pearcy M, Hadfield G
Faculty of Medicine, University of Newcastle, Newcastle, Australia.
Clin Biomech (Bristol). 1992 May;7(2):109-19. doi: 10.1016/0268-0033(92)90024-X.
The fascicular anatomy of the psoas major was determined by dissection in three cadavers. Its actions on the lumbar spine in the sagittal plane were modelled on erect, flexion, and extension radiographs of ten adult males. Calculations revealed that psoas exerts only very small moments that tend to extend the upper lumbar spine and to flex the lower lumbar spine, but at maximum contraction the psoas exerts severe compression forces on the lumbar segments, and large shear forces.
通过对三具尸体进行解剖，确定了腰大肌的束状解剖结构。在十名成年男性的直立、前屈和后伸X线片上模拟了其在矢状面上对腰椎的作用。计算结果显示，腰大肌仅产生非常小的力矩，倾向于伸展上腰椎并屈曲下腰椎，但在最大收缩时，腰大肌会对腰椎节段施加巨大的压缩力和较大的剪切力。
