Osteoarthritis Pain Management
For osteoarthritis pain, begin with education, exercise (including strength training and aerobic activity), and weight loss if overweight, then add topical NSAIDs as first-line pharmacological therapy before considering oral NSAIDs or other systemic medications. 1
Core Treatment Foundation (Required for All Patients)
These interventions form the foundation and should be implemented before or alongside any pharmacological therapy:
Patient Education
- Provide both oral and written information to counter the misconception that osteoarthritis is inevitably progressive and untreatable 1
- Education demonstrates uniform positive effects on pain across hip/knee and isolated knee OA 1
Physical Activity and Exercise
- Exercise shows the most uniformly positive effects on pain across all treatment modalities 1
- Implement general exercise programs that include local muscle strengthening and general aerobic fitness 1, 2
- Aerobic exercise demonstrates positive effects specifically for general OA and knee OA 1
- Strength and resistance training shows uniform positive effects for general OA, hip/knee OA, isolated hip OA, and isolated knee OA 1
- For foot/ankle OA specifically, general exercise programs are effective 1
Weight Management
- Weight loss is mandatory if the patient is overweight or obese 1, 2
- Weight management demonstrates uniform positive effects on pain in hip/knee OA 1
- This reduces mechanical stress on affected joints 2
Footwear Modifications
- Recommend shoes with shock-absorbing properties to reduce joint loading 1, 2
- This is particularly important for lower extremity OA 2
Adjunct Non-Pharmacological Treatments
Psychological Interventions
- Psychological interventions show uniformly positive effects on pain, second only to exercise 1
- Cognitive behavioral therapy (CBT) demonstrates uniform positive effects for general OA 1
- Psychosocial and coping interventions are effective for general OA 1
- Relaxation interventions show positive effects for general OA and hip/knee OA 1
Orthotics and Assistive Devices
- Orthotics show small but consistent positive effects on pain 1
- For knee OA: knee orthoses (especially sleeves and elastic bandages) are effective 1
- For hand OA: splints demonstrate positive effects 1
- For foot OA: insoles or orthoses benefit patients with biomechanical joint pain or instability 1, 2
- Consider assistive devices (walking sticks, tap turners) for patients with specific functional limitations 1, 2
Physical Modalities
- Local heat or cold applications may provide symptomatic relief 1, 2
- Transcutaneous electrical nerve stimulation (TENS) can be considered 1
- Manipulation and stretching, particularly for hip OA, may be beneficial 1
Interventions NOT Recommended
- Do NOT use glucosamine or chondroitin products 1
- Do NOT use electroacupuncture 1, 2
- Insufficient evidence exists for acupuncture despite some trials 1
Pharmacological Treatment Algorithm
First-Line: Topical Therapy
- For knee and hand OA, topical NSAIDs are the first-line pharmacological treatment 1, 2
- Topical NSAIDs (such as diclofenac) have fewer systemic side effects than oral NSAIDs 2
- Topical capsaicin can also be considered 1
Second-Line: Oral Analgesics
- Paracetamol (acetaminophen) can be offered for pain relief with regular dosing as needed 1, 2
- Consider paracetamol before advancing to oral NSAIDs or COX-2 inhibitors 1
Third-Line: Oral NSAIDs/COX-2 Inhibitors
- If paracetamol and topical NSAIDs provide insufficient pain relief, add or substitute with oral NSAIDs or COX-2 inhibitors 1, 2
- Use the lowest effective dose for the shortest possible duration 1, 3
- Always co-prescribe a proton pump inhibitor for gastroprotection, choosing the one with the lowest acquisition cost 1, 2
- First choice should be either a COX-2 inhibitor (other than etoricoxib 60 mg) or a standard NSAID 1
Fourth-Line: Opioid Analgesics
- Consider adding opioid analgesics if NSAIDs are insufficient or contraindicated 1
Intra-articular Injections
- Intra-articular corticosteroid injections may provide short-term pain relief during disease flares 1, 4
- Hyaluronic acid products can be considered for knee OA 4
Critical Safety Considerations
NSAID Risk Assessment
- All oral NSAIDs and COX-2 inhibitors have similar analgesic efficacy but vary significantly in gastrointestinal, hepatic, and cardiorenal toxicity 1, 2
- Assess individual risk factors including age before prescribing 1
- For elderly patients (≥75 years), topical NSAIDs are strongly preferred over oral NSAIDs when applicable 3
- Assess cardiovascular risk factors, particularly uncontrolled hypertension, before prescribing 3
- Use with caution in patients with mild to moderate renal impairment 3
- Consider ongoing monitoring of gastrointestinal, hepatic, and renal function 1
Special Populations
- In elderly patients and those with comorbidities, carefully weigh risks and benefits of all pharmacological treatments 1
- For patients taking low-dose aspirin, consider alternative analgesics to avoid increased gastrointestinal risk 1
Assessment and Monitoring
Initial Assessment
- Evaluate the effect of OA on function, quality of life, occupation, mood, relationships, and leisure activities 1
- Assess pain characteristics, previous and ongoing pain treatments, inflammation and joint damage, and psychological factors 1
- Identify patient needs, preferences, and priorities 1
Ongoing Management
- Provide periodic review tailored to individual needs 1
- Formulate management plans in partnership with the patient, considering comorbidities 1
- Target positive behavioral changes including exercise, weight loss, appropriate footwear, and activity pacing (avoiding "peaks and troughs") 1
Common Pitfalls to Avoid
- Do not skip core non-pharmacological treatments (education, exercise, weight management) in favor of medications alone—these have the strongest and most uniform evidence for pain reduction 1
- Do not prescribe oral NSAIDs without gastroprotection in patients requiring chronic use 1, 2
- Do not use NSAIDs in combination with aspirin without careful consideration of increased gastrointestinal risk 1
- Do not recommend glucosamine, chondroitin, or electroacupuncture as these lack evidence of benefit 1, 2
- Do not neglect psychological interventions—these show uniformly positive effects comparable to exercise 1