Too many to mention: There are over 100 types of arthritis although the most common are osteoarthritis and rheumatoid arthritis.
Answered 6/22/2013
5k views
Two major groups: The two major groups of arthritis are "inflammatory" vs "non-inflammatory" arthritis. Osteoarthritis is the most common in the non-inflammatory group with rhuematoid arthritis being common in the inflammatory group.
Answered 11/16/2013
4.7k views
9 doctors weighed in across 2 answers
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