A new ambulatory foot pressure device for patients with sensory impairment. A system for continuous measurement of plantar pressure and a feed-back alarm

Pataky, Zoltan; L, Faravel; Silva, JoseH Da; Assal, Jean‐Philippe

doi:10.1016/s0021-9290(00)00082-8

Cited by 42 publications

(29 citation statements)

References 5 publications

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“…Table III shows that our pressure measurements (peak values between 67.6 and 185.1 kPa ) are consistent with other studies in medical community (e.g. peak pressure in the range of 40 kPa to 179 kPa was reported in [11]). The current method to prevent diabetic foot ulcers is doctor prescribed shoes and orthotic inserts to reduce the risk of ulceration by decreasing high plantar pressure.…”

Section: B Tradeoff Resultssupporting

confidence: 91%

“…This price point can be reached with some compromising: primarily the number of sensors in the shoe would be very limited. Several studies have examined such systems, which consist of several resistive force sensors laid out on an insole [10,11]. These studies looked at sensor placement and proved that such a system was possible, although both systems required a computing device/gateway attached to the waist.…”

Section: Introductionmentioning

confidence: 99%

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Sensor architectural tradeoff for diabetic foot ulcer monitoring

Ostadabbas

Saeed

Nourani

et al. 2012

2012 Annual International Conference of the IEEE Engineering in Medicine and Biology Society

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The diabetic foot complications constitute a tremendous challenge for patients, caregivers, and the healthcare system. Studies show up to 25% of diabetic individuals will develop a foot ulcer during their lifetime and many of these patients eventually must undergo amputation as a result of infection due to untreated foot ulcers. With current technology, in-shoe monitoring systems can be implemented to continuously monitor at-risk ulceration sites based on known indicators such as peak pressure. The important parameters in designing a pressure-sensing insole include the number, location and size of sensors. In this paper, we aim at showing the criticality of sensor architectural tradeoff in developing the in-shoe plantar pressure monitoring systems. We evaluate this tradeoff by using our custom-made platform for data collection during normal walking.

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Section: B Tradeoff Resultssupporting

confidence: 91%

Section: Introductionmentioning

confidence: 99%

Sensor architectural tradeoff for diabetic foot ulcer monitoring

Ostadabbas

Saeed

Nourani

et al. 2012

2012 Annual International Conference of the IEEE Engineering in Medicine and Biology Society

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show abstract

“…Unlike some methods based on foot-switches or other pressure sensitive devices, no special footwear is needed for long-term monitoring, which makes this kind of monitoring more comfortable for the patient. In addition, available foot-switch-based devices limit the gait analysis to the temporal parameters [31,32], while our method provides both temporal and spatial parameters.…”

Section: Discussionmentioning

confidence: 99%

Balance and knee extensibility evaluation of hemiplegic gait using an inertial body sensor network

et al. 2013

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BackgroundMost hemiplegic patients have difficulties in their balance and posture control while walking because of the asymmetrical posture and the abnormal body balance. The assessment of rehabilitation of hemiplegic gait is usually made by doctors using clinical scale, but it is difficult and could not be used frequently. It is therefore needed to quantitatively analyze the characteristics of hemiplegic gait. Thus the assessment would be simple, and real-time evaluation of rehabilitation could be carried out.MethodsTwenty subjects (ten hemiplegic patients, ten normal subjects) were recruited. The subjects walked straight for five meters at their self-selected comfortable speed towards a target line on the floor.Xsens MTx motion trackers were used for acquiring gestures of body segments to estimate knee joint angles and identify gait cycles. A practical method for data acquisition that does not need to obtain accurate distances between a knee joint and its corresponding sensors is presented.ResultsThe results showed that there were significant differences between the two groups in the three nominated angle amplitudes. The mean values of balance level of each parameter in hemiplegic gait and normal gait were: 0.21 versus 0.01, 0.18 versus 0.03, and 0.92 versus 0.03, respectively. The mean values of added angles of each parameter in hemiplegic gait and normal gait were: 74.64 versus 91.31, -76.48 versus −132.4, and 6.77 versus 35.74.ConclusionsIt was concluded that the wearable bio-motion acquisition platform provided a practical approach that was effective in discriminating gait symptoms between hemiplegic and asymptomatic subjects. The extensibility of hemiplegic patients’ lower limbs was significantly lower than that of normal subjects, and the hemiplegic gait had worse balance level compared with normal gait. The effect of rehabilitation training of hemiplegic gait could be quantitatively analyzed.

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“…presented a portable plantar pressure measurement system with seven sensors located under high risk area of foot [9]. The more recent studies aimed at more in-situ processing ability by using a computing device/gateway attached to the waist [10][11][12].…”

Section: B Related Workmentioning

confidence: 99%

“…These regions are selected and fixed based on either the medically-predefined high risk ulceration sites of foot [12], or foot pressure image obtained from a pressure indicating film while subject standing on it [10]. The main draw back of these systems is except for a few exact points under the sensors, pressure distribution information on other points of plantar area is completely lost.…”

Section: B Related Workmentioning

confidence: 99%

Continuous plantar pressure modeling using sparse sensors

Ostadabbas

Nourani

Pompeo

2012

2012 IEEE 12th International Conference on Bioinformatics &Amp; Bioengineering (BIBE)

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The foot complications constitute a tremendous challenge for diabetic patients, caregivers, and the healthcare system. With current technology, in-shoe monitoring systems can be implemented to continuously monitor foot's at-risk ulceration sites and send feedback to patients and physicians. The few available high resolution in-shoe pressure measuring systems are extremely expensive and targeting clinical use only. The more affordable price ranges can be reached by limiting the number of sensors in the shoe. Precise subject-specific sensor placement is still a challenge in such platforms. Moreover, there is no good way to estimate pressure on other points of the foot. In this paper, we address these technical challenges by proposing SCPM algorithm that reconstructs a continuous foot plantar pressure image from a sparse set of sensor readings. Using our technique, sensor placement can be the same in every electronic insole. However, the SCPM's trained parameters are unique for every subject and foot.

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A new ambulatory foot pressure device for patients with sensory impairment. A system for continuous measurement of plantar pressure and a feed-back alarm

Cited by 42 publications

References 5 publications

Sensor architectural tradeoff for diabetic foot ulcer monitoring

Sensor architectural tradeoff for diabetic foot ulcer monitoring

Balance and knee extensibility evaluation of hemiplegic gait using an inertial body sensor network

Continuous plantar pressure modeling using sparse sensors

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