Arthritis is the UK’s most common cause of chronic pain and disability, affecting approximately 10 million people. Yet “arthritis” is not a single condition — it encompasses over 100 different joint diseases with different causes, mechanisms and treatments. Understanding which type you have is the starting point for effective management.

Osteoarthritis (OA): The Most Common Type

Osteoarthritis involves the gradual breakdown of articular cartilage — the smooth tissue covering the ends of bones in joints — combined with changes in the underlying bone and inflammation of the joint lining. It most commonly affects the knees, hips, hands (particularly the base of the thumb and the end finger joints), and spine. Risk factors: age (most significant), obesity (particularly for knee and hip OA — every 1kg of weight loss reduces knee joint loading by approximately 4kg), previous joint injury, and occupational loading. Contrary to the old belief that OA is purely “wear and tear,” it is now understood as a complex, dynamic process involving inflammatory, metabolic and biomechanical factors — all of which are modifiable to varying degrees.

Rheumatoid Arthritis (RA): An Autoimmune Condition

Rheumatoid arthritis is a systemic autoimmune disease in which the immune system mistakenly attacks the synovial lining of joints, producing chronic inflammation, joint damage, and systemic effects. Key distinguishing features from OA: symmetrical joint involvement (both hands, both knees), morning stiffness lasting over an hour (brief stiffness in OA, prolonged in RA), systemic symptoms (fatigue, malaise, fever), elevated inflammatory markers (CRP, ESR), and positive rheumatoid factor or anti-CCP antibodies. RA requires prompt diagnosis and treatment with disease-modifying drugs (DMARDs — methotrexate as first-line) to prevent irreversible joint damage. Early aggressive treatment has transformed outcomes dramatically.

What Helps OA Symptoms

Exercise is first-line treatment for OA — this is frequently surprising to patients who assume activity worsens arthritis. Multiple systematic reviews confirm that both aerobic exercise and muscle-strengthening (particularly quadriceps strengthening for knee OA) reduce pain and improve function. Cartilage requires the pressure of movement for nutrient delivery (it has no blood supply). Weight loss in those who are overweight produces significant pain reduction — 10% body weight loss has been shown to halve knee OA pain in multiple trials. OTC pain relief: topical diclofenac (Voltarol gel) has strong evidence and minimal systemic absorption; paracetamol for mild-moderate pain; oral ibuprofen for acute flares (with caution in those with GI or cardiovascular risk). Physiotherapy for exercise prescription and manual therapy. Heat and cold therapy for symptom relief.

Joint Supplements: The Evidence

Glucosamine and chondroitin: largest RCTs (GAIT study) showed benefit primarily in moderate-severe knee OA. May provide modest symptom relief; evidence is mixed but safety is good. The pharmaceutical-grade combination (1500mg glucosamine sulphate + 1200mg chondroitin) is the evidence-based formulation. Omega-3 fatty acids (EPA/DHA): anti-inflammatory; multiple studies show reduced joint pain and stiffness in RA and OA. Turmeric/curcumin: anti-inflammatory properties with growing evidence for OA pain. More effective in high-bioavailability formulations.

Frequently Asked Questions About Arthritis

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