Hello Diana,
I believe what you're describing may be osteoarthritis, also known as degenerative joint disease. Please see:
Joint Pain
http://www.healthcentral.com/osteoarthritis/symptoms-10715-108.html
Joint Swelling
http://www.healthcentral.com/osteoarthritis/symptoms-10713-108.html
Basics of Osteoarthritis
http://www.healthcentral.com/osteoarthritis/understanding-osteoarthritis.html?ic=4018
I hope this is helpful to you.
Best,
Maria