<s>[INST] What Is Degenerative Arthritis? [/INST] I like to explain to patients that degenerative arthritis or osteoarthritis is when joints are wearing out and things can get painful. It affects about 30 million Americans a year.  Source: Illinois Bone & Joint Institute. Link: https://www.ibji.com/blog/rheumatology-autoimmune-care/common-questions-about-arthritis/. Field: Rheumatology. Disease: Arthritis </s>