Simplified measurement and visualization tool for crutch walk training

Tsuda, Naoaki; Sakai, Yuya; Fujii, Keiji; Tarao, Susumu; Nomura, Yoshihiko; Kato, Norihiko

doi:10.1109/aim.2012.6265904

Cited by 6 publications

(4 citation statements)

References 11 publications

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“…Although the authors in [32] did not disclose the value of the mean RMS error in the estimation of the crutch inclination during normal walking, they presented a plot comparing the crutch tilt angles measured by an MCS and the approach proposed in that article. It can be easily appreciated from this plot that the mean RMS error must be over 5°, which is far from 1.13° of the algorithm proposed in this work.…”

Section: Discussionmentioning

confidence: 99%

“…First is the axial load force [23], which allows determining the support requirements of the patient. Second is the pitch angle of the crutch, as it allows defining the motion of the crutch [32], and it is useful for identifying gait performance indicators such as crutch dragging and imperfect alignment [22]. While the first variable is usually measured by piezoelectric sensors or load cells, the measurement of the crutch pitch angle is a more challenging task, for which gyroscopes or accelerometers are traditionally used.…”

Section: Introductionmentioning

confidence: 99%

“…The use of gyroscopes to measure crutch inclination requires integration of the measured angular rate, which introduces a drift [12,19,32,33] that has to be corrected. For that purpose, several approaches have been proposed, such as the use of pressure sensors to detect a reference position [19] or compensating the drift by estimating its tendency [32]. However, these approaches, in general, do not provide sufficient accuracy.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Instrumented Crutch Tip for Monitoring Force and Crutch Pitch Angle

Sesar

Cabanes

Portillo

et al. 2019

Sensors

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In rehabilitation procedures related to the lower limbs, gait monitoring is an important source of information for the therapist. However, many of the approaches proposed in the literature require the use of uncomfortable and invasive devices. In this work, an instrumented tip is developed and detailed, which can be connected to any crutch. The instrumented tip provides objective data of the crutch motion, which, combined with patient movement data, might be used to monitor the daily activities or assess the recovery status of the patient. For that purpose, the tip integrates a two-axis inclinometer, a tri-axial gyroscope, and a force sensor to measure the force exerted on the crutch. In addition, a novel algorithm to estimate the pitch angle of the crutch is developed. The proposed approach is tested experimentally, obtaining acceptable accuracies and demonstrating the validity of the proposed lightweight, portable solution for gait monitoring.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Instrumented Crutch Tip for Monitoring Force and Crutch Pitch Angle

Sesar

Cabanes

Portillo

et al. 2019

Sensors

View full text Add to dashboard Cite

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“…On the other hand, there were few researches in which the crutch walk motions were reviewed. In [7], a prototype advising system for crutch walks was developed.The walk motions were measured by an optical motion capturing system (MOCAP), and the walk motions were evaluated. In these evaluations, the body accelerations that were estimated from the body parts motions were used.…”

Section: Introductionmentioning

confidence: 99%

Development of Measuring and Guiding Robot for Crutch Walk Training

Tsuda¹,

Hiasa²,

Tarao³

et al. 2016

Telehealth and Assistive Technology / 847: Intelligent Systems and Robotics

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Patients who are forced to use axillary crutches by sudden accidents usually use them temporally. Although the time period during which the patients require crutches is short, it is desirable that such patients are properly instructed on the proper method of using crutches when the patients start to use crutches. In this paper, a guiding robot for crutch beginners was developed. This robot mainly consists of the Roomba vacuum cleaner and the Kinect sensor. It was designed to move ahead of a crutch user by using the Roomba's moving mechanism, and to measure the crutch user's body parts motions by using the Kinect sensor, simultaneously. Some experiments were carried out, and it was confirmed that the developed robot can lead the walking crutch user with keeping a constant distance, and it can determine the before/after stride ratio of the crutch user. The before/after stride ratio will be efficient to evaluate the walk motion stability.

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