Question 1

What is the difference between osteoarthritis and rheumatoid arthritis?

Accepted Answer

Osteoarthritis (OA) is wear-and-tear degeneration of joint cartilage, most common after age 50, primarily affecting weight-bearing joints and hands. Morning stiffness lasts under 30 minutes. Rheumatoid arthritis (RA) is an autoimmune disease causing synovial inflammation in multiple joints, particularly small joints of hands and feet symmetrically. Morning stiffness exceeds 30-60 minutes. RA can occur at any age and causes systemic symptoms including fatigue. RA can be confirmed with blood tests (RF, anti-CCP antibodies). Treatment differs fundamentally: OA is managed symptomatically; RA requires disease-modifying therapy to prevent joint destruction.

Question 2

How is arthritis diagnosed?

Accepted Answer

OA diagnosis is primarily clinical (history and physical exam) confirmed by X-ray showing joint space narrowing and bone spurs. MRI is more sensitive for early cartilage changes. RA diagnosis requires blood tests (RF, anti-CCP antibodies — positive in 70-80% of patients), inflammatory markers (ESR, CRP), and imaging. The 2010 ACR/EULAR criteria score symptom pattern, lab values, and duration to classify RA. Early rheumatology referral is important — treatment within 12 weeks of RA symptom onset dramatically reduces joint damage.

Question 3

Can arthritis be prevented?

Accepted Answer

OA prevention focuses on modifiable risk factors: maintaining a healthy weight (obesity is the strongest modifiable risk factor for knee OA), avoiding joint injury (or treating injuries promptly), and building muscle strength around joints. Recreational running does not increase OA risk in healthy joints. RA prevention evidence is less clear, but smoking cessation significantly reduces RA risk and severity. Periodontal disease treatment may reduce RA risk. There is no proven way to prevent RA if you are genetically predisposed.

Question 4

What foods help or hurt arthritis?

Accepted Answer

Evidence-based dietary interventions: Mediterranean diet (associated with lower OA progression and reduced RA disease activity); omega-3 fatty acids from fatty fish (reduces inflammatory cytokines, modestly reduces RA disease activity); vitamin D and calcium (important for bone health alongside OA). Gout is directly triggered by high-purine foods: red meat, organ meats, shellfish, and alcohol — especially beer. Avoiding these reduces gout attack frequency. No specific food reliably worsens OA. Anti-inflammatory eating patterns (more vegetables, fish, olive oil; less processed foods and sugar) benefit overall joint health.

Question 5

Is morning stiffness in joints always arthritis?

Accepted Answer

Morning stiffness lasting under 30 minutes is typical of OA and normal aging. Stiffness lasting over 30-60 minutes, especially in multiple joints, particularly the small joints of the hands, strongly suggests inflammatory arthritis (RA, psoriatic arthritis, or other systemic conditions). Fibromyalgia causes morning stiffness and pain throughout the body without joint inflammation. Polymyalgia rheumatica (PMR) causes profound morning stiffness of the shoulders and hips in adults over 50 with dramatically elevated ESR and rapid response to low-dose steroids.

Question 6

When should I see a rheumatologist versus an orthopedic surgeon for arthritis?

Accepted Answer

See a rheumatologist for: suspected inflammatory arthritis (RA, psoriatic arthritis, lupus, gout with frequent attacks); any arthritis with systemic symptoms (fatigue, rash, fever, eye inflammation); and arthritis in multiple joints without a clear diagnosis. See an orthopedic surgeon for: end-stage osteoarthritis that has failed conservative management and is being evaluated for joint replacement; mechanical joint problems (loose bodies, meniscus tears); and joint infections requiring surgical washout. Primary care physicians can initiate both referrals.

Question 7

Do glucosamine and chondroitin supplements work for arthritis?

Accepted Answer

The evidence is mixed. The GAIT trial (NIH-funded, 1,600 patients) found no benefit of glucosamine plus chondroitin over placebo for most participants. A subgroup with moderate-to-severe pain showed modest benefit. The LEGS trial found chondroitin sulfate (but not glucosamine) reduced cartilage loss on MRI. Current guidelines: OARSI does not recommend glucosamine for hip OA; the evidence is uncertain for knee OA. Some patients report subjective benefit. Both are generally safe with minimal side effects. A 3-month trial is reasonable in knee OA patients who want to try them.

Question 8

How is gout treated and prevented?

Accepted Answer

Acute gout attack: colchicine (most effective when started within 12-24 hours of attack onset), NSAIDs (indomethacin, naproxen), or corticosteroids for those who cannot tolerate the above. Cold packs and elevation help. Prevention of recurrent attacks: allopurinol or febuxostat lower uric acid long-term — recommended after 2 or more attacks per year. Target uric acid below 6 mg/dL (below 5 mg/dL with tophi). Dietary modification (reducing red meat, shellfish, alcohol especially beer, high-fructose corn syrup) reduces attack frequency.

Question 9

Is walking good or bad for knee arthritis?

Accepted Answer

Walking is beneficial for knee OA and is recommended by all major guidelines. It strengthens the quadriceps and periarticular muscles that absorb joint force, reduces inflammation, and improves function. A 2019 Cochrane review found land-based exercise reduces pain and improves function in knee OA more than no exercise. Walking on flat surfaces for 30 minutes most days is a reasonable starting point. Nordic walking (with poles) reduces knee joint loading compared to regular walking. Avoid walking if it causes pain lasting more than an hour after stopping — that level of activity is too aggressive.

Question 10

How much does obesity affect arthritis?

Accepted Answer

Obesity is the single largest modifiable risk factor for knee OA. Each pound of body weight generates approximately 4 pounds of force on the knee joint during walking and up to 8 pounds on stairs. A 10-pound weight loss reduces knee joint force by 40 pounds per step. Studies show that 10% weight loss in overweight adults with knee OA produces 50% reduction in pain. Obesity also promotes systemic inflammation that directly damages joint cartilage, independent of mechanical load. Even modest weight loss before joint replacement surgery significantly reduces complications and improves outcomes.

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