Influence of foot posture on immediate biomechanical responses during walking to variable-stiffness supported lateral wedge insole designs

An Exploration of Changes in Plantar Pressure Distributions During Walking With Standalone and Supported Lateral Wedge Insole Designs 

“…Hinman et al reported only a weak correlation (r = 0.25) between the lateral shift in CoP with LWI and change in KAM peak (15). In the current study we also found WEDG+U-ARCH had the largest lateral shifts in CoP, but was previously reported to be ineffective at reducing the KAM (12). In a different biomechanical assessment of medial thrust gait, a medial shift in CoP was found to be linearly related to KAM reduction (r = 0.40 -0.70) (16).…”

“…The growing concern between concomitant foot and ankle symptoms and poorer clinical features of knee OA (5,6) highlights a need for LWI intervention to minimize the likelihood of generating or exacerbating foot symptoms. Our a liated evaluation of the insoles from this study found WEDG and WEDG+V-ARCH to be effective at KAM reduction (12). Differences in the regional plantar pressure pro les may help inform which of these two LWI could be more appropriate for biomechanical intervention in patients experiencing concomitant foot symptoms.…”

“…Future research in the comfort effects these LWI would bene t from longer study durations and using cohorts of patients with knee OA. As previously mentioned, only WEDG and WEDG+V-ARCH reduced the KAM (12). Until we know otherwise with data from patients with knee OA, these insoles can perhaps be treated equivalently for their biomechanical e cacy, and the prescription of either LWI should prioritize minimizing regional pressures and improving subjective comfort.…”

“…The current investigation is a complementary analysis of plantar pressure and comfort data obtained during gait analysis of various LWI designed for knee OA. A summary of the joint kinematic and kinetic outcomes for these insoles were reported in Tse et al (12), which found standalone medial arch supports increased the KAM. Similar ndings of increased KAM with medial arch supports have been reported (22,23), despite Hinman et al (23) reporting non-signi cant increases in a small sample with large variability in KAM change.…”

An exploration of changes in plantar pressure distributions during walking with standalone and supported lateral wedge insole designs

“…A consistent effect of LWI is increased ankle eversion and external eversion moment demands [ 4 , 8 , 9 ], with greater angles of wedging also negatively affecting self-reported comfort [ 10 , 11 ]. Supported-LWI have been shown to be effective at minimizing ankle eversion effects, while still reducing the KAM [ 8 , 9 , 12 ], and may be preferred over a standalone LWI [ 13 ]. Considering the clinical concerns of concomitant foot symptoms in knee OA and that multiple LWI options have demonstrated biomechanical efficacy, selecting an insole for patients to avoid exacerbation of existing foot symptoms appears to be paramount.…”