A durable, low-cost electrogoniometer for dynamic measurement of joint trajectories.
This article introduces a method and step-by-step instructions for the design of a low-cost, flexible electrogoniometer, suitable for kinesiology, rehabilitation, and biometric applications. Two unidirectional flexible sensors are placed back-to-back, and a multivariate linear regression model was used to combine measurements from the two sensors. Following a short calibration procedure, the electrogoniometer can be reliably used for measurement of flexion/extension angles of various hinge joints. The performance of the goniometer has been tested on a population of 21 healthy subjects performing flexion/extension of index finger, wrist and elbow. The proposed device achieves the quality of joint angle measurements comparable to that of commercial electrogoniometers, while having a significantly higher durability-to-cost ratio.
Department of Biomedical Engineering, University of California, Irvine, CA 92697, USA. ptwang@uci.edu
Po T
PT
Wang
Christine E
CE
King
An H
AH
Do
Zoran
Z
Nenadic
D000328:Adult; D053587:Arthrometry, Articular / Q000191:economics* / Q000295:instrumentation*; D004560:Electricity; D004868:Equipment Failure; D005260:Female; D006801:Humans; D007596:Joints / Q000502:physiology*; D008297:Male; D008875:Middle Aged; D009068:Movement; D055815:Young Adult