Arthritis, a term meaning inflammation of the joint, is a very common ailment, especially as patients advance in age. As a progressive disorder, arthritis pain begins gradually and worsens over time.

Osteoarthritis, a term meaning "arthritis of the bone," is the most common type of arthritis. It is a "wear and tear" type of arthritis. The condition occurs when the natural cushioning between joints (cartilage) wears away. When this happens, bones of the joints rub together due to less shock-absorbing benefits of cartilage. Cartilage is a firm, slippery tissue that enables nearly frictionless joint motion.

Osteoarthritis of the knee can occur due to advanced age, obesity, past injury, or damage to the knee area. ​​The resulting rubbing within the joint results in pain, swelling, stiffness, decreased ability to move, and, sometimes, formation of bone spurs.

Signs and Symptoms

• Pain amplified with movement
• Swelling, tenderness, and a feeling of warmth in the affected area
• Stiffness in the knee, especially after inactivity
• Decrease in the mobility of the knee and loss of flexibility
• Crackling sound or popping sensation when the knee moves