The Influence of Pelvic Adjustment on Functional Leg Length Inequality and Foot Pressure

Abstract

Abstract. [Purpose] This study was conducted to evaluate the influence of pelvic adjustment on functional leg length inequality (FLLI) and foot pressure.[Subjects] The study subjects were 40 adults who were healthy but had FLLI of at least 10 mm. Subjects were randomly assigned to two groups, an experimental group (n=20) and a control group (n=20).[Methods] The subjects of the experimental group underwent pelvic adjustment 3 times a week for 4 weeks. A tape-measure was used to measure FLLI, and F-Scan was used to measure the heel pressure difference (HPD) and the 1 st metatarsal pressur difference (MPD). For all subjects, the lengths of both legs were measured before the intervention, and at 2 weeks and 4 weeks after the intervention was started.[Results] Pelvic adjustment was effective at reducing FLLI , HPD and 1 st MPD. HPD and the 1 st MPD were reduced in proportion to the reduction in FLLI . FLLI was effectively reduced after 2 weeks of intervention and the reduction was more remarkable after 4 weeks.[Conclusion] We presume that pelvic adjustment reduces FLLI and foot pressure difference and that foot pressure difference is reduced in proportion to the reduction in FLLI. In conclusion, we consider that pelvic adjustment is suitable for reducing FLLI as well as foot pressure difference.

The influence of pelvic adjustment on vertical jump height in female university students with functional leg length inequality

“…Park et al reported that balance in 20 elderly men was improved through pelvic adjustment according to the Gonstead method 15 ) . In this study, FLLI was reduced after pelvic adjustment, a finding similar to a previous study in which pelvic adjustment helped reduce FLLI and the pressure difference between soles 14 ) .…”

“…Subjects were instructed to lie prone, their pelvic height was checked, and the posterior-inferior innominate bone was given an anterior-superior impact while the anterior-superior pelvis was given a posterior-inferior impact. When making these impacts, the therapist put one of his hands on top of the other, placed them on the posterior-superior iliac spine or the ischial spine, and then gave the impact using his own weight, gravity, and acceleration 14 ) . This adjustment was performed 3–5 times by one skilled physical therapist with more than 10 years of clinical experience.…”

“…However, there has been no study in which FLLI was corrected and VJH was measured as a barometer for leg muscle strength. Many studies have assessed the effect of pelvic adjustment on FLLI 14 ) , posture 4 ) , pressure on the foot, and balance 15 ) . However, no study has investigated the changes in FLLI and VJH resulting from just a single adjustment.…”

Impact of post-manipulation corrective core exercises on the spinal deformation and lumbar strength in golfers: a case study

“…A study by Gong et al 34 ) showed that pelvic adjustment has a positive impact on functional leg length inequality and foot pressure. Park et al 35 ) reported greater stability after pelvic adjustment in an elderly population.…”

Changes in foot pressure elicited by 3D air balance exercise and pelvic stability exercise for functional leg-length discrepancy in adult women

“…Leg-length discrepancy (LLD) is the term used to describe the condition when both legs are markedly different in length 1 ) . Leg-length discrepancy occurs in 40–70% of the total population and is reported to be more than 20 mm in one out of every 1,000 persons 2 ) .…”