The effects of increasing heel height on forefoot peak pressure

1999 ◽  
Vol 89 (2) ◽  
pp. 75-80 ◽  
Author(s):  
MG Mandato ◽  
E Nester
Keyword(s):  
Measurement System ◽  
Pressure Measurement ◽  
Peak Pressure ◽  
First Metatarsal ◽  
Heel Height ◽  
Peak Pressures ◽  
Pressure Measurement System

The purpose of this study was to determine the effect of increasing heel height on peak forefoot pressure. Thirty-five women were examined while wearing sneakers and shoes with 2-inch and 3-inch heels. An in-shoe pressure-measurement system was used to document the magnitude and location of plantar peak pressures. Pressure under the forefoot was found to increase significantly with increasing heel height. As the heel height increased, the peak pressure shifted toward the first metatarsal and the hallux. The reproducibility of data obtained with the in-shoe pressure-measurement system was tested in five subjects; the data were found to be reproducible to within approximately 3% of measured pressures.

A Longitudinal Investigation into the Functional and Physical Durability of Insoles Used for the Preventive Management of Neuropathic Diabetic Feet

2014 ◽  
Vol 104 (1) ◽  
pp. 50-57 ◽  
Author(s):  
Joanne S. Paton ◽  
Elizabeth Stenhouse ◽  
Graham Bruce ◽  
Ray Jones
Keyword(s):  
Pressure Measurement ◽  
Peak Pressure ◽  
Functional Performance ◽  
Metatarsal Head ◽  
First Metatarsal ◽  
Longitudinal Investigation ◽  
Significant Difference ◽  
Foot Lesions ◽  
Neuropathic Foot ◽  
Pressure Measurement System

Background Insoles are commonly used to assist in the prevention of diabetic neuropathic foot ulceration. Insole replacement is often triggered only when foot lesions deteriorate, an indicator that functional performance is comprised and patients are exposed to unnecessary ulcer risk. We investigated the durability of insoles used for ulcer prevention in neuropathic diabetic feet over 12 months. Methods Sixty neuropathic individuals with diabetes were provided with insoles and footwear. Insole durability over 12 months was evaluated using an in-shoe pressure measurement device and through repeated measurement of material depth at the first metatarsal head and the heel seat. Analysis of variance was performed to assess change across time (at issue, 6 months, and 12 months). Results Analyses were conducted using all available data (n = 43) and compliant data (n = 18). No significant difference was found in the reduction of mean peak pressure tested across time (P < .05). For both sites, significant differences in insole depth were identified between issue and 6 months and between issue and 12 months but not between 6 and 12 months (P < .05). Most insole compression occurred during the initial 6 months. Conclusions Visual material compression does not seem to be a reliable indicator of insole usefulness. Frequency of insole replacement is best informed by a functional review of effect determined using an in-shoe pressure measurement system. These results suggest that insoles for diabetic neuropathic patients can be effective in maintaining peak pressure reduction for 12 months regardless of wear frequency.

The Plantar Loading Variations to Uphill and Downhill Gradients During Treadmill Walking

2000 ◽  
Vol 21 (3) ◽  
pp. 227-231 ◽  
Author(s):  
John Grampp ◽  
John Willson ◽  
Thomas Kernozek
Keyword(s):  
Measurement System ◽  
Pressure Measurement ◽  
Peak Pressure ◽  
Treadmill Walking ◽  
Peak Force ◽  
Capacitive Sensors ◽  
Gradient Condition ◽  
Pressure Measurement System

The purpose of the study was to examine the plantar loading changes during 5 gradient conditions on a treadmill (−15%, −8.5%, Level, 8.5%, 15%) for 20 participants using the Pedar® in-shoe pressure measurement system. The measurement system uses EMED insoles, each consisting of 99 capacitive sensors, sampled at 50 Hz. Data was collected from the last 20 seconds at each gradient condition while participants walked. As the treadmill gradient increased, loading (peak pressure [PP] and peak force [PF]) increased in the hallux and 1st metatarsal regions and decreased in the heel region. With negative gradients, loading (PP and PF) increased in the heel region and decreased in the 4th and 5th metatarsal regions.

Reliability of an In-Shoe Pressure Measurement System During Treadmill Walking

1996 ◽  
Vol 17 (4) ◽  
pp. 204-209 ◽  
Author(s):  
T. W. Kernozek ◽  
E. E. LaMott ◽  
M. J. Dancisak
Keyword(s):  
Measurement System ◽  
Pressure Measurement ◽  
Peak Pressure ◽  
Measurement Techniques ◽  
Peak Force ◽  
Foot Pressure ◽  
Time Integral ◽  
Pressure Time ◽  
Force Time ◽  
Pressure Measurement System

We examined the reliability of in-shoe foot pressure measurement using the Pedar in-shoe pressure measurement system for 25 participants walking at treadmill speeds of 0.89, 1.12, and 1.34 meters/sec. The measurement system uses EMED insoles, which consist of 99 capacitive sensors, sampled at 50 Hz. Data were collected for 20 seconds at two separate times while participants walked at each gait speed. Differences in some of the loading variables across speed relative to the total foot and across the different anatomical regions were detected. Different anatomical regions of the foot were loaded differently with variations in walking speed. The results indicated the need to control speed when evaluating loading parameters using in-shoe pressure measurement techniques. Coefficients of reliability were calculated. Variables such as peak force for the total foot required two steps to achieve a coefficient of reliability of 0.98. To achieve excellent reliability (>0.90) in the peak force, force time integral, peak pressure, and pressure time integral across the total foot and the seven regions, a maximum of eight steps was needed. In general, timing variables, such as the instant of peak force and the instant of peak pressure, tended to be the least reliable measures.

1997 William J. Stickel Bronze Award. Comparison of strategies for reducing pressure at the site of neuropathic ulcers

1997 ◽  
Vol 87 (10) ◽  
pp. 466-472 ◽  
Author(s):  
JG Fleischli ◽  
LA Lavery ◽  
SA Vela ◽  
H Ashry ◽  
DC Lavery
Keyword(s):  
Diabetes Mellitus ◽  
Measurement System ◽  
Pressure Measurement ◽  
Scientific Data ◽  
Consistent Pattern ◽  
Great Toe ◽  
The Third ◽  
System Data ◽  
Pressure Measurement System ◽  
Neuropathic Ulcers

Few scientific data are available on the effectiveness of commonly used modalities for reducing pressure at the site of neuropathic ulcers in persons with diabetes mellitus. The authors' aim was to compare the effectiveness of total contact casts, half-shoes, rigid-soled postoperative shoes, accommodative dressings made of felt and polyethylene foam, and removable walking casts in reducing peak plantar foot pressures at the site of neuropathic ulcerations in diabetics. Using an in-shoe pressure-measurement system, data from 32 midgait steps were collected for each treatment. There was a consistent pattern in the devices' effectiveness in reducing foot pressures at ulcer sites under the great toe and ball of the foot. Removable walking casts were as effective as or more effective than total contact casts. Half-shoes were consistently the third most effective modality, followed by accommodative dressings and rigid-soled postoperative shoes.

scholarly journals Design and Development of a Nonintrusive Pressure Measurement System for Pipeline Monitoring

2014 ◽  
Vol 5 (3) ◽  
pp. 04014001 ◽  
Author(s):  
A. M. Sadeghioon ◽  
Robert Walton ◽  
David Chapman ◽  
Nicole Metje ◽  
Carl Anthony ◽  
...  
Keyword(s):  
Measurement System ◽  
Pressure Measurement ◽  
Design And Development ◽  
Pipeline Monitoring ◽  
Pressure Measurement System

Evaluating the suitability of thick-film TiO2 capacitors for use in a wireless pressure measurement system

2006 ◽  
Vol 26 (5-7) ◽  
pp. 1077-1081 ◽  
Author(s):  
K. Arshak ◽  
D. Morris ◽  
A. Arshak ◽  
O. Korostynska ◽  
E. Jafer
Keyword(s):  
Thick Film ◽  
Measurement System ◽  
Pressure Measurement ◽  
Pressure Measurement System
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