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What Does the Research Say?
The SPACE Trial: Why Opioids Are Not First-Line for Chronic Pain
A landmark 12-month randomized trial compared opioid therapy head-to-head with non-opioid alternatives for chronic back pain and osteoarthritis. The results changed practice guidelines worldwide.
Opioid Therapy Group
"Opioids Must Work Better for Severe Pain"
Patients received escalating opioid medications for chronic back pain or hip and knee osteoarthritis over 12 months.
4.5%
experienced falls or fractures, with more medication-related side effects overall
Non-Opioid Therapy Group
"Non-Opioid Strategies Match or Beat Opioids"
Patients received non-opioid medications including acetaminophen, NSAIDs, and adjuvant agents for the same conditions.
3.4%
experienced falls or fractures, with equivalent functional outcomes and fewer side effects
⚠️
The Bottom Line
Opioid therapy was not superior to non-opioid therapy for pain-related function at 12 months and was associated with significantly more medication-related adverse effects. This trial provides Level 1 evidence that opioids should not be routine first-line therapy for chronic back pain or osteoarthritis.
Relative Fall Risk
1.3×
Patients discharged on opioids had a 30% higher relative risk of falls or fractures compared to those receiving NSAIDs alone in a large Medicare study.
Guideline Impact
4+
Major clinical guidelines now cite the SPACE trial, including the CDC, American College of Physicians, American Academy of Family Physicians, and Beers Criteria.
3 Takeaways for Your Practice
1
Prescribing Shift
Non-Opioid Strategies Are the Evidence-Based Default
For chronic low back pain, hip osteoarthritis, and knee osteoarthritis, the evidence now clearly supports non-opioid medications as first-line therapy. Topical NSAIDs, duloxetine, and structured exercise produce equivalent functional outcomes with fewer adverse effects.
2
Deprescribing Opportunity
Patients on Long-Term Opioids Deserve Reassessment
A 12-year opioid regimen does not mean opioids are working. The SPACE trial showed that switching to non-opioid strategies produces equal function with fewer side effects. Gradual tapering at 5% to 10% per month, with concurrent non-opioid optimization, is the evidence-based approach.
3
Patient Communication
Frame Deprescribing as Better Care, Not Abandonment
Patients fear opioid reduction means their pain won't be managed. Shared decision-making, realistic goal-setting around function improvement rather than pain elimination, and assurance that the taper will be paused if needed build trust and improve outcomes.
Product Spotlight:
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Meet the Author: Anne Osborn, PT, MPT
Anne Perry Osborn is a distinguished physical therapist and entrepreneur with over two decades of experience bridging clinical practice and healthcare education. She holds a Master of Physical Therapy from Texas Tech University Health Sciences Center and currently serves as the Owner and Director of Quality and Accreditation at Ridley Learning. With a background that includes clinical roles in outpatient rehabilitation and home health, Anne brings practical, hands-on insight to her leadership in continuing education, ensuring that learning opportunities remain relevant and impactful for today's practitioners.
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