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A Compact Orthosis Compliance Monitoring Device Using Pressure Sensors and Accelerometers: Design and

Devi Baruni Devanand¹, Matthew D Gardiner^2,3, Angela E Kedgley¹

¹Department of Bioengineering, Imperial College London, London SW7 2AZ, UK.

Sensors (Basel, Switzerland)

|March 17, 2025

Summary

This summary is machine-generated.

This study developed a device to objectively monitor hand orthosis compliance using pressure and acceleration sensors. The technology shows promise for improving the effectiveness of orthotic treatments in clinical practice and research.

Keywords:

accelerometer adherence compliance design feasibility hand orthotics pressure sensor wear time

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Area of Science:

Biomedical Engineering
Rehabilitation Technology
Orthotics and Prosthetics

Background:

Patient diaries for monitoring orthosis compliance are subjective and can lead to inaccurate data.
Objective compliance monitoring is crucial for ensuring orthotic interventions are effective.
Existing methods lack the precision needed for reliable assessment of device usage.

Purpose of the Study:

To develop and validate a novel device for objective monitoring of hand orthosis compliance.
To assess the feasibility of using pressure and acceleration sensors for wear time estimation.
To compare the performance of pressure and accelerometer-based monitoring.

Main Methods:

Developed a wearable device incorporating pressure and acceleration sensors.
Recruited fifteen participants to test the device during various grip patterns and daily activities.
Utilized sensor threshold values to differentiate between orthosis wear and non-wear states.
Analyzed data to calculate sensitivity and specificity for both sensor types.

Main Results:

No significant differences were found between pressure sensor and accelerometer-based wear time estimations.
Pressure sensors demonstrated a specificity of 92.7% and sensitivity of 74.0%.
Accelerometers showed a specificity of 66.1% and sensitivity of 86.2% for wear time estimation.

Conclusions:

The developed device is feasible for objectively monitoring hand orthosis compliance.
Both pressure and acceleration sensors offer viable methods for tracking device usage.
This technology can enhance the understanding of orthotic effectiveness in clinical and research settings.