ABSTRACT


The effect of psoas muscle and lumbo-pelvic-hip complex chiropractic treatments on the trunk flexibility and hip internal rotation


Jeong Chong Soo
Advisor : Prof. Moon, Kyung-Rye M.D.,Ph,D.
Department of Complementary and Alternative Medicine, Graduate School of Chosun University

The purpose of this study was to investigate the effect of chiropractic on hip flexion, extension, left and right flexion, and lateral rotation of the triceps by means of chiropractic adjustment of the lumbo-pelvic-hip complex and psoas muscle. The applicants who were interested in participating in the Yulchon-dong area of city Gwangju were divided into experimental group and control groups and the chiropractic treatment was conducted twice.
The result of this study was that chiropractic treatment of psoas muscle and lumbo-pelvic-hip complex showed that the angle of internal rotation in the left side of the hip was 41.7 ± 11.3 before the treatment and 46.2 ± 7.9 afterwards in the experimental group; the right internal rotation angle was 42.6 ± 9.8 before and 46.79 ± 7.9 after the treatment. The angle of internal rotation was significantly increased to recover the left and right balance.
The flexibility of the trunk was increased by approximately 9.1 ° from 109.5 ± 5.9 to 118.6 ± 5.9 in flexion and increased by 7.2 ° in extension from 17.2 ± 7.1 to 24.4 ± 6.2 in the experimental group. The angulation was increased by 6.7 ° in the left side from 27.6 ± 6.4 to 34.3 ± 4.5 and increased by 4 ° in the right side from 31.3 ± 6.2 to 35.3 ± 4.3. In the case of rotation, the left side increased from 4.1 ± 2.7 to 12.2 ± 2.2 and the right side increased from 9.2 ± 2.9 to 12.6 ± 2.4 by about 3.4 °.
In the control group, flexion showed an increase of about 5.4 ° from 108.0 ± 6.3 to 113.4 ± 5.7, and extension increased to about 26.2 ± 5.4 from 23.9 ± 6.4. And there was no significant angle change in left and right excavation and rotation. Independent t-test was performed to confirm posttest homogeneity between experimental group and control group. There was statistically significant difference in all items except ''trunk extension'' and ''trunk lateral flexion (right)''. These results demonstrate that chiropractic treatment of psoas muscle and lumbo-pelvic-hip complex is effective in improving internal rotation of the hip and restoring flexibility of the trunk

Key word : Lumbo-Pelvic-Hip Complex, Chiropractic, Psoas Muscle, Hip Interal Rotation, Trunk Flexibility