Abstract
Devising techniques and instrumentation for early detection of knee arthritis and chondromalacia presents a challenge in the domain of biomedical engineering. The purpose of the present investigation was to characterize normal knees and knees affected by osteoarthritis, rheumatoid arthritis, and chondromalacia using a set of noninvasive acceleration measurements. Ultraminiature accelerometers were placed on the skin over the patella in four groups of subjects, and acceleration measurements were obtained during leg rotation. Acceleration measurements were significantly different in the four groups of subjects in the time and frequency domains. Power spectral analysis revealed that the average power was significantly different for these groups over a 100–500 Hz range. Noninvasive acceleration measurements can characterize the normal, arthritis, and chondromalacia knees. However, a study on a larger group of subjects is indicated.
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Reddy, N.P., Rothschild, B.M., Mandal, M. et al. Noninvasive acceleration measurements to characterize knee arthritis and chondromalacia. Ann Biomed Eng 23, 78–84 (1995). https://doi.org/10.1007/BF02368303
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DOI: https://doi.org/10.1007/BF02368303