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Wireless wearable range-of-motion sensor system for upper and lower extremity joints: a validation study
Yogaprakash Kumar1, Shih-Cheng Yen1, Arthur Tay1
1Department of Electrical & Computer Engineering , National University of Singapore , 4 Engineering Drive 3 , Singapore 117583 , Singapore.
Healthcare Technology Letters
|November 27, 2015
Summary
A new wireless wearable sensor system accurately measures range-of-motion (ROM) in upper and lower extremities. This automated system shows high correlation with goniometry, offering a faster, reliable alternative for rehabilitation assessments.
Area of Science:
- Biomechanics
- Rehabilitation Engineering
- Medical Instrumentation
Background:
- Range-of-motion (ROM) assessment is crucial for rehabilitation.
- Conventional goniometry is reliable but time-consuming and prone to measurement errors.
- An automated wireless wearable sensor system for ROM measurement has been developed.
Purpose of the Study:
- To evaluate the correlation and accuracy of a novel automated wireless wearable sensor system against goniometry for ROM assessment.
- To compare measurements in major joints of the upper and lower extremities (UEs and LEs).
- To assess system performance in both healthy subjects and inpatients undergoing rehabilitation.
Main Methods:
- A wireless wearable sensor system was developed for automated ROM measurement.
- ROM assessments were conducted using both the sensor system and a goniometer by physical therapists.
- Intra-subject comparisons were performed on 19 healthy subjects and 20 inpatients.
Main Results:
- In healthy subjects, sensor system ROM measurements highly correlated with goniometry (95% differences < 20° for UEs, < 10° for LEs).
- In inpatients, sensor system ROM measurements also showed high correlation with goniometry (95% differences < 20° for UEs, < 25° for LEs).
- The system demonstrated good accuracy across major joints of both extremities.
Conclusions:
- The automated wireless wearable sensor system provides a highly correlated and accurate method for ROM assessment compared to goniometry.
- This technology offers a promising, efficient alternative for clinical use in rehabilitation settings.
- The system's reliability in both healthy and patient populations supports its potential clinical application.
