Abstract
An articular sound arising from knee joint is known to be useful for diagnosis of knee osteoarthritis. However, measurement and evaluation method have been unsolved and it has not been implemented yet. This study aims to establish a simple, highly accurate and available in clinical diagnosis system of knee osteoarthritis using articular sound. The articular sound was measured by stethoscopes attached on the shank and the continuous wavelet transform was used for data processing. The discriminant formula was determined using discriminant analysis with parameters from the measurement data and then receiver operating characteristic (ROC) curve was obtained. As a result, the discriminant formula having the sensitivity of 0.778 and specificity of 0.792 was found.
