Doctors mention the word "arthritis" all the time, but we generally don't do a great job at explaining what osteoarthritis actually means and how it relates to the pain, locking or creaking of a joint. This video refers to osteoarthritis of the foot but the same principle can be applied to many osteoarthritic joints of the body. Please be mindful that there are different types of arthritis, and this video specifically refers to Osteoarthritis, which differs from other forms of arthritis such as rheumatoid arthritis.