Foot pressure distribution in patients with gonarthrosis

Motooka, Tsutomu; Tanaka, Hirofumi; Ide, Seiji; Mawatari, Masaaki; Hotokebuchi, Takao

doi:10.1016/j.foot.2011.11.008

Cited by 8 publications

(2 citation statements)

References 7 publications

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“…Plantar pressure monitoring is required in various pathological conditions such as diabetes and gonarthrosis [1,2]. People with these pathological conditions are very likely to experience foot problems associated with higher plantar pressure because of the loss of sensation caused by nerve damage and circulatory problems associated with the disease.…”

Section: Introductionmentioning

confidence: 99%

Combined application of FBG and PZT sensors for plantar pressure monitoring at low and high speed walking

Suresh

Bhalla

Singh³

et al. 2014

THC

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Background: Clinical monitoring of planar pressure is vital in several pathological conditions, such as diabetes, where excess pressure might have serious repercussions on health of the patient, even to the extent of amputation. Objective: The main objective of this paper is to experimentally evaluate the combined application of the Fibre Bragg Grating (FBG) and the lead zirconate titanate (PZT) piezoceramic sensors for plantar pressure monitoring during walk at low and high speeds. Methods: For fabrication of the pressure sensors, the FBGs are embedded within layers of carbon composite material and stacked in an arc shape. From this embedding technique, average pressure sensitivity of 1.3 pm/kPa and resolution of nearly 0.8 kPa is obtained. Results: These sensors are found to be suitable for measuring the static and the low-speed walk generated foot pressure. Simultaneously, PZT patches of size 10×10×0.3 mm were used as sensors, utilizing the d 33 (thickness) coupling mode. A sensitivity of 7.06 mV/kPa and a pressure resolution of 0.14 kPa is obtained from these sensors, which are found to be suitable for foot pressure measurement during high speed walking and running.Both types of sensors are attached to the underside of the sole of commercially available shoes. In the experiments, a healthy male subject walks/ runs over the treadmill wearing the fabricated shoes at various speeds and the peak pressure is measured using both the sensors.Commercially available low-cost hardware is used for interrogation of the two sensor types.The test results clearly show the feasibility of the FBG and the PZT sensors for measurement 2 of plantar pressure. The PZT sensors are more accurate for measurement of pressure during walking at high speeds. The FBG sensors, on the other hand, are found to be suitable for static and quasi-dynamic (slow walking) conditions. Typically, the measured pressure varied from 400 to 600 kPa below the forefoot and 100 to 1000 kPa at the heel as the walking speed varid from 1 kilometer per hour (kmph) to 7 kmph. Conclusions: When instrumented in combination, the two sensors can enable measurements ranging from static to high speed conditions Both the sensor types are rugged, small sized and can be easily embedded in commercial shoes and enable plantar pressure measurement in a cost-effective manner. This research is expected to have application in the treatment of patients suffering from diabetes and gonarthrosis.

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Section: Introductionmentioning

confidence: 99%

Combined application of FBG and PZT sensors for plantar pressure monitoring at low and high speed walking

Suresh

Bhalla

Singh³

et al. 2014

THC

View full text Add to dashboard Cite

show abstract

“…When adjustment for malalignment of the entire leg insufficient, changes develop in foot posture and contact patterns of the sole [1]. Higher prevalence of pronated foot posture and alterations in plantar distribution in knee OA has been revealed in several studies [2,3].…”

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confidence: 99%

The relation between knee pain and static & dynamic foot posture in individuals with osteoarthritis: A pilot study

2016

Gait & Posture

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Foot pressure distribution and contact duration pattern during walking at self-selected speed in young adults

Petrovic

Devedzic

Ristić

et al. 2013

2013 2nd Mediterranean Conference on Embedded Computing (MECO)

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Foot pressure distribution in patients with gonarthrosis

Cited by 8 publications

References 7 publications

Combined application of FBG and PZT sensors for plantar pressure monitoring at low and high speed walking

Combined application of FBG and PZT sensors for plantar pressure monitoring at low and high speed walking

The relation between knee pain and static & dynamic foot posture in individuals with osteoarthritis: A pilot study

Foot pressure distribution and contact duration pattern during walking at self-selected speed in young adults

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