Managing Chronic Pain Without Opioids: The Role of Physiotherapy

For two decades, a prescription pad was the default answer to persistent pain. If your back still hurt after a few weeks, the logic went, you needed something stronger — and stronger usually meant an opioid. That instinct has now been reversed by the very institutions that once encouraged it. The story of how, and why, is one of the most consequential shifts in modern medicine, and it places movement-based care at the centre rather than the margins.

Chronic pain is not a niche problem. Low back pain alone has been the leading cause of years lived with disability worldwide since 1990, and an estimated 619 million people were living with it in 2020 — a figure projected to reach 843 million by 2050 [1]. When a condition is this common, how we choose to treat it at scale matters enormously.

The guidelines quietly changed direction

In 2022, the U.S. Centers for Disease Control and Prevention published an updated clinical practice guideline for prescribing opioids for pain. Its recommendations are careful and non-absolute, but the direction of travel is unmistakable: for common subacute and chronic pain, clinicians are advised to maximise non-opioid and non-drug therapies first, and to reserve opioids for situations where their expected benefits are likely to outweigh their risks [2].

Across the Atlantic, the UK's National Institute for Health and Care Excellence went further for one category of pain. Its 2021 guideline on chronic primary pain (persistent pain that cannot be accounted for by another diagnosis) explicitly recommends against starting opioids, along with several other common analgesics, because the committee found a lack of evidence of benefit set against real evidence of long-term harm. What it recommends instead is telling: supervised group exercise, psychological therapy, and, for some, acupuncture [3].

These are not fringe positions. They represent a considered reappraisal by mainstream guideline bodies of a class of drugs whose benefits for long-term musculoskeletal pain turned out to be smaller, and whose harms larger, than was assumed when prescribing accelerated in the late 1990s and 2000s.

The trial that undercut the assumption

Guidelines are only as good as the evidence beneath them, and the pivotal piece of evidence here is the SPACE trial, published in JAMA in 2018. Researchers randomly assigned 240 patients with moderate-to-severe chronic back pain or hip or knee osteoarthritis pain to one of two treatment strategies: an opioid-based regimen or a non-opioid one. Both groups were managed with the same careful, escalating "treat-to-target" approach over 12 months [4].

The result surprised many clinicians precisely because it contradicted intuition. If opioids are powerful painkillers, surely they should win a head-to-head contest? Over a year of real-world management for these conditions, they did not. The authors concluded that the findings did not support initiating opioid therapy for moderate-to-severe chronic back or osteoarthritis pain [4]. A single trial is never the whole story, but SPACE was rigorous, and its conclusions align with the direction the guidelines have since taken.

Rethinking what pain actually is

To understand why movement and understanding can rival a strong drug, it helps to update an old mental model. Many of us grew up believing pain is a simple readout of tissue damage — more damage, more pain. Modern pain science complicates that picture. Pain is produced by the nervous system as a protective output, shaped not only by what is happening in the tissues but by beliefs, mood, stress, sleep, and past experience. This is the essence of the biopsychosocial model, and it is now the mainstream framework for understanding persistent pain [5].

This is not to say the pain is "in your head" — it is unambiguously real. Rather, in long-standing pain the alarm system can become more sensitive, so that it keeps sounding even when the original injury has healed. Imaging findings illustrate the disconnect vividly: disc bulges and other "abnormal" scan findings are extremely common in people with no pain at all, which is one reason guidelines now caution against over-relying on scans for common low back pain [5].

Hurt does not always equal harm. In persistent pain, the intensity of a sensation is not a reliable gauge of how much damage is being done.

That single reframe — hurt does not equal harm — has practical consequences. If a person believes every twinge signals fresh injury, they naturally avoid movement, and that avoidance tends to make things worse over time, deconditioning the body and heightening the nervous system's vigilance. Breaking that cycle is where physiotherapy does much of its work.

The evidence for movement and understanding

Exercise is the most studied non-drug approach to chronic pain, and an overview of Cochrane reviews synthesising that literature found that physical activity and exercise can improve pain severity, physical function, and quality of life across a range of chronic pain conditions. Just as importantly for a treatment meant to be used long-term, the reviewers found no evidence of serious harm — the adverse events were minor, such as temporary muscle soreness [6]. That safety profile is a large part of why exercise sits at the top of the recommendations.

Crucially, "exercise" here does not mean punishing workouts. In practice it often means graded activity: starting well within a person's current tolerance and building gradually, so the nervous system relearns that movement is safe. The specific mode matters less than doing something consistently and progressing it sensibly — which is exactly the kind of individualised planning a physiotherapist provides.

Pairing movement with understanding appears to help further. Pain neuroscience education — teaching people how pain is produced and why hurt does not equal harm — has been studied as an adjunct to physiotherapy. A systematic review and meta-analysis for chronic low back pain found moderate-quality evidence that adding pain education to physiotherapy probably improves pain and disability in the short term, and can reduce the fear of movement and catastrophic thinking that keep many people stuck [7]. Knowledge, it turns out, can be therapeutic.

For people whose pain is more entrenched or more entangled with mood, work, and daily function, multidisciplinary biopsychosocial rehabilitation — combining physical, psychological, and often occupational components — has the strongest support. A Cochrane systematic review and meta-analysis found it more effective than usual care or physical treatment alone for reducing pain and disability in chronic low back pain, and more likely to help people return to work [8]. Pain, being biopsychosocial, often responds best to care that addresses more than one dimension at once.

What this means in practice

The take-home is not that opioids are never appropriate — for some conditions and situations they remain an important option, and that judgement belongs with a prescriber. The take-home is that for common chronic musculoskeletal pain, the evidence and the guidelines now position active, non-drug approaches as first-line rather than last-resort. Movement, education, and coordinated multidisciplinary care are treatments in their own right, not consolation prizes.

If you are living with persistent pain, none of this is a reason to change your current treatment on your own — and it is emphatically not advice to reduce or stop any medication, which should only ever be done in discussion with the clinician who prescribed it. What the research does offer is a reason for optimism and a set of questions worth raising with a qualified professional: could a graded exercise programme help? Would understanding my pain differently change how I approach it? Is a multidisciplinary team available to me? A physiotherapist or doctor can assess your individual situation and help you weigh the options the evidence describes.