Very different: Osteoporosis refers to thinning of the bones and generally affects the whole skeleton. It is a painless process unless a fracture occurs. Osteoarthritis refers to a painful joint disease due to narrowing of the joints so bone may be rubbing on bone. It may commonly affect the joints of the hips, knees, or hands.
Answered 2/25/2014
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Pain: Osteoporosis is a painless decrease in the minerals within bone causing it to lose density where arthritis is inflammation of a joint from any number of sources.
Answered 2/25/2014
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