Comparison of Hip and Lumbopelvic Movement while Hip Lateral Rotating in Individual with Chronic Low Back Pain

Kim, Chi Hwan; Han, Jin Tae

Abstract

PURPOSE
This study examined the hip and lumbopelvic movement while the hip was rotating laterally in individuals with chronic low back pain (CLBP).
METHODS
Sixty healthy subjects and sixty subjects with CLBP were enrolled in this study. Myomotion (Myomotion research pro, Noraxon Inc., German) was used to measure the hip lateral rotation and the lumbopelvic movement. An independent t-test was used to compare the hip lateral rotation and lumbopelvic rotation between the groups.
RESULTS
Between healthy males and females, healthy females showed a smaller hip lateral rotation angle (HLRA) than healthy males in the hip lateral rotation test (HLRT). Between the healthy females and females with CLBP, the females with CLBP showed a smaller HLRA and greater lumbopelvic motion than the healthy females in the HLRT, and their lumbopelvic motions occurred earlier during lateral rotation of the hip. Finally, between the males and females with CLBP, the females with CLBP showed a smaller HLRA and greater lumbopelvic motion in the HLRT, and their lumbopelvic motions occurred earlier during lateral rotation of the hip.
CONCLUSION
The results of this study suggest that the CLBP affected the hip lateral rotation, and the lumbopelvic movement depended on gender. In particular, compared to the other groups, the females with CLBP showed a larger lumbopelvic rotation angle and smaller hip lateral rotation angle and lumbopelvic motion occurred early during lateral rotation of the hip.