Effects of a self-assessment device for pelvic position on chronic back pain and range of motion of the trunk

[Purpose] The purpose of the present study was to investigate the effects of a self-assessment device for pelvic position in a computer user with back pain. [Subjects] A 37-year-old man who complained of low back pain at L3–5 levels was the participant. [Methods] In this study, a self-assessment device for the pelvic position was developed. The patient was instructed in self-assessment of the pelvic position and an exercise program for two months. Prior to this instruction, the visual analog scale score and range of motion of the trunk were assessed. [Results] After the instruction in self-assessment of the pelvic position and exercise program, the visual analog scale score decreased from 7 to 3, and trunk flexion, extension, and bilateral lateral flexion range of motion were increased compared to the initial assessment. [Conclusion] Therefore, use of self-anthropometers and measuring methods in patients with chronic back pain is considered an important area of study.