Flexion-extension rhythm in the lumbosacral spine

Ruey Mo Lin, Chih Yin Yu, Zeu Jen Chang, Fong Chin Su

研究成果: Article

10 引文 斯高帕斯(Scopus)


Study Design and Objectives. This study was conducted to depict the qualitative and quantitative changes of intervertebral rotation and translation from L1-L2 to L5-51 during flexion, standing, and extension using dynamic lumbosacral radiographs. Methods, A radiopaque ruler was placed on the back of each subject for the normalization of translational value. Eighty-nine- volunteers were examined, Results. From extension to flexion, all of the intervertebral rotations approached 0˚ from the lordotic position; the translations changed from slightly retrolisthetic to zero displacement. Using L3-L4 as a baseline for calculating the intervertebral differences in flexion, air of the rotational differences were less than 1.5˚ except at L5-S1, which remained 5. The mean translational differences was less than 0.5 mm, except at L5-S1, where it remained 1.5 mm. Conclusion. The amount of total flexibility was level-dependent and its frequency distribution is important. Qualitative values changes front extension to flexion and quantitative values of intervertebral differences in flexion help define the normal flexibility more accurately.

頁(從 - 到)2204-2209
出版狀態Published - 1994 十月

All Science Journal Classification (ASJC) codes

  • Orthopedics and Sports Medicine
  • Clinical Neurology

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