The following laboratory tests may be helpful in determining causes of restless legs syndrome (RLS) or identifying conditions that rule it out. 1  Blood glucose tests for diabetes. 2  Tests for kidney problems. 3  In certain cases, tests for thyroid hormone, magnesium, and folate levels.
Osteoarthritis. Osteoarthritis is the most common form of arthritis in the knee. It is a degenerative,wear-and-tear type of arthritis that occurs most often in people 50 years of age and older, but may occur in younger people, too. In osteoarthritis, the cartilage in the knee joint gradually wears away.he most common types of arthritis are osteoarthritis and rheumatoid arthritis, but there are more than 100 different forms. In 2012, more than 51 million people reported that they had been diagnosed with some form of arthritis, according to the National Health Interview Survey.
The root word, osteo, means bone. While both conditions impact the bones, osteoarthritis -arthritis effects the joints between the bones while osteoporosis -porosis, meaning porous bone, effects the bones directly. There are over one hundred types of arthritis, but the most common is osteoarthritis. Osteoarthritis, also known as degenerative joint disease, is a form of arthritis caused by inflammation, breakdown, and the eventual loss of cartilage in the joints. According to The Arthritis Foundation, about 27 million Americans are affected by osteoarthritis.