2012 Volume 14 Issue 4 Pages 191-198
The purpose of this study is to investigate the morphological changes of psoas major of sitting position by the difference of the pelvic positions and by having hip flexion movement or not, in 10 healthy male adults. By the measurement of psoas major in anterior tilt position, neutral position and posterior position of the pelvis, with the ultrasonographic measurement equipment, Intra-rater reliability in each lumbar section was approximately good, and reliability of the measurement by the difference in position of pelvis was shown. In six different position (anterior tilt position, neutral position and posterior position of the pelvis, and three hip flexion movements from anterior tilt position, neutral position and posterior position of the pelvis), I measured and examined the thickness of psoas major. In all lumbar, psoas major of pelvic anterior tilt position and psoas major of hip flexion movement from pelvic anterior tilt position became significantly thick in comparison with psoas major of pelvic neutral and of pelvic posterior tilt position, and psoas major of hip flexion movements from pelvic neutral tilt position and from pelvic posterior tilt position became significantly thick in comparison with psoas major of pelvic posterior tilt position. On the basis of this result, the possibility that I can analyze the morphological change of psoas major quantitatively in various activity of psoas major in clinical with the ultrasonograhic measurement equipment was suggested.
