Osteoarthritis

Osteoarthritis (OA) is the most common form of arthritis, characterized by the breakdown of joint cartilage and underlying bone. It primarily affects the knees, hips, hands, and spine.

• Diagnosis: Diagnosis is typically clinical, based on a history of use-related joint pain and stiffness that improves with rest. X-rays can confirm joint space narrowing, bone spurs (osteophytes), and subchondral sclerosis.
• Progression: OA is a progressive disease. While it cannot be cured, symptoms can be managed effectively to maintain joint function and quality of life.
• Weight Management: For weight-bearing joints (knees, hips), weight loss is the single most effective intervention. Reducing body weight significantly decreases the mechanical load and inflammatory stress on the joints.

Pharmacological treatment focuses on pain relief and reducing localized inflammation.

Topical and Oral NSAIDs

Topical NSAIDs (like diclofenac gel) are strongly recommended for knee and hand OA because they provide targeted relief with minimal systemic side effects. Oral NSAIDs (like ibuprofen or celecoxib) are used for more widespread or severe pain, though long-term use requires monitoring for gastrointestinal and cardiovascular risks.

Intra-Articular Injections

Corticosteroid injections directly into the joint can provide significant, though temporary, relief for acute flares. Hyaluronic acid injections (viscosupplementation) are sometimes used for knee OA to provide lubrication, though clinical guidelines are mixed on their efficacy.

Duloxetine

Originally an antidepressant, duloxetine (Cymbalta) is FDA-approved for chronic musculoskeletal pain and is often used for patients with knee OA who cannot tolerate NSAIDs.

Movement is medicine for Osteoarthritis. Contrary to the belief that exercise "wears out" joints, physical activity is crucial for joint health.

• Strength Training: Strengthening the muscles around the affected joint (e.g., quadriceps for knee OA) acts as a shock absorber, reducing the load on the cartilage itself.
• Low-Impact Aerobics: Activities like swimming, cycling, or using an elliptical machine improve cardiovascular health and joint mobility without excessive impact.
• Assistive Devices: Using a cane in the hand opposite the affected knee or hip can significantly reduce joint loading during walking.

Research is actively exploring ways to repair cartilage and delay the need for joint replacement surgery.

• NCT06391554 (University of Aarhus): The EDUEX trial investigating the effects of combined education and exercise compared to education alone on clinical outcomes in patients with hip osteoarthritis.
• NCT06823089 (Cytex Therapeutics): An early feasibility study evaluating novel methods for cartilage defect repair.

When conservative measures fail and pain severely impacts daily function, surgical options are considered.

• Arthroscopy: While less commonly recommended now for simple knee OA, arthroscopic surgery can be used to remove loose bodies or repair severe meniscal tears that cause "catching" or "locking" of the joint.
• Osteotomy: In younger, active patients with unilateral knee damage (damage to only one side of the knee), an osteotomy reshapes the bone to shift the load away from the damaged cartilage.
• Total Joint Arthroplasty (Replacement): For end-stage OA, particularly of the hip and knee, total joint replacement is a highly successful surgery. The damaged bone and cartilage are removed and replaced with metal, plastic, or ceramic components, dramatically relieving pain and restoring function.

Q: Does cracking my knuckles cause Osteoarthritis?
A: No. Medical studies have shown no link between cracking knuckles and the development of osteoarthritis in the hands.

Q: Are supplements like Glucosamine and Chondroitin effective?
A: The clinical evidence is mixed. While major clinical guidelines do not strongly recommend them due to lack of consistent evidence for cartilage repair, some patients report mild symptom relief. They are generally considered safe to try.