[Purpose] This study investigated how types of lumbosacral orthoses applied to patients
with chronic lumbar pain affect postural control and low back pain. [Subjects and Methods]
Ten subjects were randomly selected and allocated to each a group wearing soft lumbosacral
orthoses and a group wearing rigid lumbosacral orthoses. They wore the lumbosacral
orthoses for 4 weeks. Pain index and postural control were measured on the first day of
wearing lumbosacral orthoses and 4 weeks later. Pain index was evaluated using a visual
analogue scale, and postural control was measured using a Balance measurement system. The
measurements examined included the overall balance index, anteroposterior balance index,
and mediolateral balance index. [Results] There were statistically meaningful within-group
differences in all variables, the visual analogue scale, overall balance index,
anteroposterior balance index, and mediolateral balance index, in the group wearing soft
lumbosacral orthoses. There were meaningful differences in visual analogue scale, overall
balance index, and mediolateral balance index in the group wearing rigid lumbosacral
orthoses. Furthermore, there was a meaningful difference in anteroposterior balance index
between the group wearing soft lumbosacral orthoses and the group wearing rigid
lumbosacral orthoses. [Conclusion] The results of the present study showed that wearing
soft lumbosacral orthoses was more effective than wearing rigid lumbosacral orthoses.