Microphone could be used to diagnose 'noisy' arthritic knees
In this study, involving Lancaster University, the University of Central Lancashire and Manchester University, researchers"listened" to the noise produced by the knees of 89 adults with osteoarthritis.
They assumed the knees would act like engineering structures - with"smooth and well-lubricated surfaces" moving quietly against each other, and"uneven movements of rough, poorly-lubricated surfaces" generating acoustic signals.Scientists attach sensors to a participant's knee to record the signals produced by the joint
, found that the more"hits" that were visible on the waveforms produced by the knees, the more"noisy" the knee and the more severe the osteoarthritis. Audible grating or crackling sounds or sensations in the joints can also be a symptom of osteoarthritis.
France Dernières Nouvelles, France Actualités
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