Knee osteoarthritis (OA) is one major cause of activity limitation and physical disability in
older adults. Early detection and intervention can help slow down the OA degeneration.
Physicians' grading based on visual inspection is subjective, varied across interpreters, and
highly relied on their experience. In this paper, we successively apply two deep
convolutional neural networks (CNN) to automatically measure the knee OA severity, as
assessed by the Kellgren-Lawrence (KL) grading system. Firstly, considering the size of …