Compar-ison of extrapyramidal signs in dementia with Lewy bodies andParkinsonâs disease. J Neuropsychiatry Clin Neurosci 2001;13:374â379.45. Stern Y, Marder K, Tang MX, Mayeux R. Antecedent clinicalfeatures associated with dementia in Parkinsonâs disease. Neurol-ogy 1993;43:1690â1692.46.
Osteoarthritis is a joint disease that mostly affects cartilage. Cartilage is the slippery tissue that covers the ends of bones in a joint. Healthy cartilage allows bones to glide over each other. It also helps absorb shock of movement.
But over time, you wear down your cushioning cartilage leaving bone rubbing painfully against bone. When joint cartilage erodes, joints become stiff, swollen, painful, and arthritic. There are many types of arthritis, and osteoarthritis -- the âwear and tearâ kind -- is by far the most common..