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· DOS Abstracts
Pedobar pressure and comfort in a mass produced
orthopaedic stiletto compared to a standard stiletto
and a sneaker. In the lab and in life
Jeannette Ø Penny, Merete Speedtsberg, Thomas Kallemose, Jesper Bencke
Dept of orthopeadics, University Hospital Hvidovre; Motion analysis lab,
University Hospital Hvidovre; Clinical Orthopaedic Research Hvidovre, University
Hospital Hvidovre; Motion analysis lab, University Hospital Hvidovre
Background:
Stilettos increases forefoot pressures and pain.
Purpose / Aim of Study:
Can an off-the-rack “orthopedic” stiletto alter pres-
sure and comfort scores in the forefoot and arch? Does anatomy have an influ-
ence?
Materials and Methods:
22 women, aged 21 to 61, shoe-size 38 (36 to 41)
had standardized X-rays and a clinical examination Three conditions tested: 8 cm
“orthopaedic” stiletto (OS) with built-in latex metatarsal lift and arch support;
same-height standard stiletto (SS) without inlays and a sneaker(SN) . 10 steps
analyzed. Peak Pressure (kPa) and Pressure-time integral (kPa/s) measured by
Novel Pedar-X pressure insoles. Each shoe-type worn 3 days. Mundermanns
comfort VAS recorded daily. P<0.05=*, p>0.01=**, p<0.001=***
Findings / Results:
Compared to SS the peak pressure under the 2+3 meta-
tarsals was reduced to 82% in the OS and 60% in the SN***. Under the first
metatarsal it was reduced to 73% and 40%, respectively***.Under the arch it
was similar for SN and OS and 30% lower for the SS*. Under the heel the OS was
27-28% lower than SS and SN***. Similar reductions were seen in the pressure-
time integrals, but with smaller difference between OS and SS**.and larger re-
ductions in the SN to 49% under 2+3 metatarsals***. For forefoot, arch and
heel, the comfort was rated highest for the SN*** and lowest for the SS**. No
statistical difference between OS and SS in the arch. For each mm the second
metatarsal was longer than the first, the pressure time integral rose 3 kPa/s)**
under the MT2+3* The VAS score dropped (less comfortable) 0.3 mm for each
kPa/s increase.
Conclusions:
A mass produced “orthopaedic” stiletto can alter foot pressures,
approaching those achieved in a sneaker and increase comfort for the user. An
increase in pressure-time integral under 2+3 metatarsals increases the discom-
fort and the pressure is increased in index-minus feet.
No conflicts of interest reported
57.