Low cost and customized plantar pressure analyzer for foot pressure image in rehabilitation foot clinic

2012 ◽  
Author(s):  
K. Petsarb ◽  
C. Apaiwong ◽  
C. Phairoh ◽  
R. Rattanakajornsak ◽  
Y. Kajornpredanon
Keyword(s):  
Plantar Pressure ◽  
Low Cost ◽  
Foot Pressure ◽  
Foot Clinic

Low Cost Foot Pressure Measuring Device

2021 ◽  
Author(s):  
Titus E. Crisan ◽  
Madalin I. Ardelean ◽  
Bogdan Tebrean ◽  
Tudor Oltean
Keyword(s):  
Low Cost ◽  
Foot Pressure ◽  
Measuring Device ◽  
Pressure Measuring Device

A Load Cell System in Foot Pressure Analysis

1982 ◽  
Vol 11 (3) ◽  
pp. 121-122 ◽  
Author(s):  
W V James ◽  
J F Orr ◽  
T Huddleston
Keyword(s):  
Low Cost ◽  
Cell System ◽  
Load Cell ◽  
Foot Pressure ◽  
Cost System ◽  
Pressure Sensitive ◽  
Low Profile ◽  
Load Cells ◽  
Pressure Analysis

A method of displaying discrete areas of pressure beneath the foot has been produced. The device employs a pressure sensitive elastomer which gives quantitative readings of the pressure developed. The 512 load cells are enclosed in a low profile platform only one inch in depth which provides a low-cost system that can be employed in clinical situations.

Aluminum foot insoles reduce plantar forefoot pressure and increase foot comfort for motorcyclists

2018 ◽  
Vol 42 (6) ◽  
pp. 606-611 ◽  
Author(s):  
Israel Casado-Hernández ◽  
Ricardo Becerro-de-Bengoa-Vallejo ◽  
Daniel López-López ◽  
Antonio Gómez-Bernal ◽  
Marta Elena Losa-Iglesias
Keyword(s):  
Clinical Trial ◽  
Plantar Pressure ◽  
Clinical Relevance ◽  
Ethylene Vinyl Acetate ◽  
Maximum Pressure ◽  
Foot Pain ◽  
Foot Pressure ◽  
First Metatarsal ◽  
Repetitive Loading ◽  
And Control

Background: Foot pain and paresthesia are common in cycling, due to plantar pressure and repetitive loading. Objectives: The aim was to investigate the effect of foot insoles on plantar pressure of the foot in motorcycling, as well as self-reported comfort. Study design: A randomized crossover clinical trial. Methods: A flexible foot pressure mat (GP MobilData WiFi® Gebiomized®) with different sizes was utilized. Results: Maximum pressure values occurred predominantly in the hallux with 4.90 ± 1.19 N/cm2, followed by second and third metatarsal areas with 4.57 ± 0.73 N/cm2, followed by the first metatarsal area with 4.30 ± 0.96 N/cm2, and followed by the fourth and fifth metatarsal areas with 3.22 ± 0.89 N/cm2 when using the control foot insole and using aluminum foot insole, which reduces maximum pressure to 1.55 ± 0.34, 1.56 ± 0.75, 1.09 ± 0.43, and 1.07 ± 0.59 N/cm2, respectively ( p < 0.001), with an effect size of 3.828, 4.067, 4.315, and 2.847, respectively. Conclusion: The use of an aluminum foot insole significantly reduced maximum pressure during motorcycling. Clinical relevance In this study, an aluminum insole in a motorcycling boot was shown to decrease maximum pressure on the foot. Comfort was significantly higher than that from ethylene vinyl acetate or commercial boot inserts. This increased comfort and decreased pressure should result in increased safety and control for motorcyclists.

scholarly journals A low-cost and highly integrated sensing insole for plantar pressure measurement

2019 ◽  
Vol 26 ◽  
pp. 100298 ◽  
Author(s):  
Qi Zhang ◽  
Yu Lu Wang ◽  
Yun Xia ◽  
Xuee Wu ◽  
Timothy Vernon Kirk ◽  
...  
Keyword(s):  
Pressure Measurement ◽  
Plantar Pressure ◽  
Low Cost ◽  
Plantar Pressure Measurement

scholarly journals Plantar Pressure Changes and Their Relationships with Low Back Pain during Pregnancy Using Instrumented Insoles

2019 ◽  
Vol 2019 ◽  
pp. 1-10 ◽  
Author(s):  
Fernando Martínez-Martí ◽  
Olga Ocón-Hernández ◽  
María Sofía Martínez-García ◽  
Francisco Torres-Ruiz ◽  
Antonio Martínez-Olmos ◽  
...  
Keyword(s):  
Low Back Pain ◽  
Back Pain ◽  
Plantar Pressure ◽  
Center Of Pressure ◽  
Low Cost ◽  
Low Back ◽  
Gait Parameters ◽  
Pregnancy And Postpartum ◽  
Pain Prevalence ◽  
Pressure Changes

Low back pain affects around 50% of pregnant women and presents significant morbidity and persistence for years in 20% of postpartum women who report that pain. Numerous studies have documented gait alterations during pregnancy and postpartum. Therefore, an analysis of the relationship between certain gait parameters and low back pain was attempted using low-cost validated instrumented insoles. This work presents a longitudinal cohort study carried out during routine gynecological follow-up visits in the first, second, and third trimesters of pregnancy at an Obstetrics and Gynecology Service. Sample size was 62. Plantar pressure data were collected with specially designed instrumented insoles containing four force sensors to measure peak pressure, center of pressure, and stance phase time in each foot and in each pregnancy trimester. The analysis was carried out on a two-dimensional level, simultaneously considering the data from both feet using Hotelling’s T2 test. This longitudinal study detected relationships between certain gait parameter changes and low back pain during pregnancy. It revealed a cyclic tendency of low back pain prevalence with a maximum in the second trimester and a decrease in the third trimester, which was correlated with alterations of the pregnant gait: excessive foot pronation and rearfoot pressure increase.

scholarly journals Human Achilles tendon glycation and function in diabetes

2016 ◽  
Vol 120 (2) ◽  
pp. 130-137 ◽  
Author(s):  
Christian Couppé ◽  
Rene Brüggebusch Svensson ◽  
Mads Kongsgaard ◽  
Vuokko Kovanen ◽  
Jean-Francois Grosset ◽  
...  
Keyword(s):  
Achilles Tendon ◽  
Plantar Pressure ◽  
Foot Ulcers ◽  
Cross Linking ◽  
Diabetic Patients ◽  
Foot Pressure ◽  
Tendon Stiffness ◽  
Material Stiffness ◽  
Skin Collagen ◽  
Collagen Cross Linking

Diabetic patients have an increased risk of foot ulcers, and glycation of collagen may increase tissue stiffness. We hypothesized that the level of glycemic control (glycation) may affect Achilles tendon stiffness, which can influence gait pattern. We therefore investigated the relationship between collagen glycation, Achilles tendon stiffness parameters, and plantar pressure in poorly ( n = 22) and well ( n = 22) controlled diabetic patients, including healthy age-matched (45–70 yr) controls ( n = 11). There were no differences in any of the outcome parameters (collagen cross-linking or tendon stiffness) between patients with well-controlled and poorly controlled diabetes. The overall effect of diabetes was explored by collapsing the diabetes groups (DB) compared with the controls. Skin collagen cross-linking lysylpyridinoline, hydroxylysylpyridinoline (136%, 80%, P < 0.01) and pentosidine concentrations (55%, P < 0.05) were markedly greater in DB. Furthermore, Achilles tendon material stiffness was higher in DB (54%, P < 0.01). Notably, DB also demonstrated higher forefoot/rearfoot peak-plantar-pressure ratio (33%, P < 0.01). Overall, Achilles tendon material stiffness and skin connective tissue cross-linking were greater in diabetic patients compared with controls. The higher foot pressure indicates that material stiffness of tendon and other tissue (e.g., skin and joint capsule) may influence foot gait. The difference in foot pressure distribution may contribute to the development of foot ulcers in diabetic patients.

Foot Pressure-Sensor System for Tracking Safety and Health

2014 ◽  
Vol 26 (1) ◽  
pp. 116-119
Author(s):  
Kenneth Shinozuka ◽  
Keyword(s):  
Pressure Sensor ◽  
Low Cost ◽  
Control Software ◽  
Foot Pressure ◽  
Gait Characteristics ◽  
Safety And Health ◽  
Audible Sound ◽  
Health Care Applications ◽  
Flexible Pressure Sensor ◽  
And Control

This paper presents an innovative pressure sensor systemembedded in a sock, which has a number of health care applications. One of these is the low-cost, reliable detection of the bed-departure of Alzheimer’s patients, an increasingly common problem that causes significant stress to caregivers. The system comprises a pressure sensor embedded in a sock and a coin battery-powered microcontroller containing a radiofrequency module. Once the user wanders out of bed and steps onto the floor, the sensor on the sock will immediately detect the pressure caused by his or her body weight and will wirelessly trigger an audible sound in a caregiver’s monitoring unit, which can be a Smartphone, tablet, or dedicated monitor. Furthermore, the pressure sensor and the microcontroller can be combined into one re-attachable unit, which can be stuck conveniently to the ball or heel of the user’s foot or any ordinary sock, slipper or shoe. In addition, the system can function as a highly accurate pedometer that is useful for monitoring the user’s health by tracking changes in his or her gait characteristics. In this study, a prototype sensor sock was developed that included an ultra-thin flexible pressure sensor, microcontroller, Bluetooth low energy module, and control software. The efficacy of the sensor sock in detecting and alerting patients’ wandering has been demonstrated.

Evaluation of a Low-Cost Pneumatic Plantar Pressure Insole for Predicting Ground Contact Kinetics

2016 ◽  
Vol 32 (2) ◽  
pp. 215-220 ◽  
Author(s):  
Daniel A. Jacobs ◽  
Daniel P. Ferris
Keyword(s):  
Root Mean Square Error ◽  
Mean Square Error ◽  
Root Mean Square ◽  
Plantar Pressure ◽  
Center Of Pressure ◽  
Low Cost ◽  
Position Vector ◽  
Mean Square ◽  
Torque Vector ◽  
Sit To Stand

Instrumented insoles could benefit locomotion research on healthy and clinical populations by providing data in natural settings outside of the laboratory. We designed a low-cost, instrumented insole with 8 pneumatic bladders to measure localized plantar pressure information. We collected gait data during treadmill walking at 1.0 m/s and 1.5 m/s and for sit-to-stand and stand-tosit tasks for 10 subjects. We estimated a common representation of ground kinetics (3-component force vector, 2-component center of pressure position vector, and a single-component torque vector) from the insole data. We trained an intertask neural network for each component of the kinetic data. For the walking tasks at 1.0 m/s and 1.5 m/s, the normalized root mean square error was between 3.1% and 12.9% and for the sit-to-stand and stand-to-sit tasks, the normalized root mean square error was between 3.3% and 21.3% Our findings suggest that the proposed low-cost, instrumented insoles could provide useful data about movement kinetics during real-world activities.

scholarly journals Implementation and design of new low-cost foot pressure sensor module using piezoelectric sensor in T-FLoW humanoid robot

2019 ◽  
Vol 9 (1) ◽  
pp. 203
Author(s):  
R. Dimas Pristovani ◽  
Dewanto Sanggar ◽  
Pramadihanto Dadet
Keyword(s):  
Pressure Sensor ◽  
Humanoid Robot ◽  
Body Force ◽  
Center Of Pressure ◽  
Low Cost ◽  
Piezoelectric Sensor ◽  
Position Vector ◽  
Stream Data ◽  
Foot Pressure ◽  
Sensor Module

<span lang="EN-US">Basically, human can sense the active body force trough the soles of their feet and can feel the position vector of zero moment point (ZMP) based on the center of pressure (CoP) from active body force. This behavior is adapted by T-FLoW humanoid robot using unique sensor which is piezoelectric sensor. Piezoelectric sensor has a characteristic which is non-continuous reading (record a data only a moment). Because of it, this sensor cannot be used to stream data such as flex sensor, loadcell sensor, and torque sensor like previous research. Therefore, the piezoelectric sensor still can be used to measure the position vector of ZMP. The idea is using this sensor in a special condition which is during landing condition. By utilizing 6 unit of piezoelectric sensor with a certain placement, the position vector of ZMP (X-Y-axis) and pressure value in Z-axis from action body force can be found. The force resultant method is used to find the position vector of ZMP from each piezoelectric sensor. Based on those final conclusions in each experiment, the implementation of foot pressure sensor modul using piezoelectric sensor has a good result (94%) as shown in final conclusions in each experiment. The advantages of this new foot pressure sensor modul is low-cost design and similar result with another sensor. The disadvantages of this sensor are because of the main characteristic of piezoelectric sensor (non-continuous read) sometimes the calculation has outlayer data.</span>

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