Our joints cushion the impact of our daily living, such as walking, carrying
items, bending and playing. Arthritis affects the joint in different ways
depending upon the type of arthritis. The exact cause of the over 100 types
aren't all known but some are brought on by injury, disease or just the passing
of time.
Arthritis is the number one cause of chronic disability in the United States. It
currently affects 40 million Americans in one form or another. Most, but not
all, of the 100 types of arthritis can be categorized into one of three basic
types; osteoarthritis, inflammatory and traumatic.
Read more in : http://arthritis.lazaza.com/