About a quarter of Americans have arthritis, with osteoarthritis being the most common form. Countless ointments, lotions, pills and gadgets aim to ease arthritis symptoms, which can be debilitating.

Both studies were presented at the American College of Rheumatology (ACR) annual meeting.

Arthritis in the knees can be a debilitating condition that affects a person's mobility and quality of life. Find out about types of knee arthritis, signs to watch for and treatment options.

The use of biologic and targeted therapies for children with juvenile idiopathic arthritis (JIA) surpassed more typical therapies in recent years, according to researchers.