what is osteoarthritis?
What is Osteoarthritis? Causes, Symptoms, Diagnosis, and Treatment Osteoarthritis (OA) is the most common type of arthritis, affecting millions of people worldwide. It is a degenerative joint disease that occurs when the protective cartilage that cushions the ends of bones wears down over time. Unlike Rheumatoid Arthritis (an autoimmune disease), osteoarthritis is caused primarily by wear and tear . As cartilage deteriorates, bones begin to rub against each other, leading to pain, swelling, stiffness , and reduced joint movement. 📌 Key Highlights: OA commonly affects knees, hips, spine, and hands. It develops gradually and worsens with age. There is no cure, but symptoms can be managed effectively. 🔍 What Causes Osteoarthritis? Osteoarthritis occurs when the cartilage — the firm, slippery tissue that enables nearly frictionless joint motion — breaks down. As the cartilage wears away, bones rub together, causing inflammation and joint damage. Common Causes Include...