Spinal manipulative therapy for adults with chronic low back pain.

Researchers from the Cochrane Collaboration updated a systematic review examining spinal manipulative therapy (SMT), a hands-on treatment where therapists apply controlled force to the spine. They analysed 76 randomised controlled trials involving nearly 12,000 people with long-term low back pain to see how SMT compared to fake treatment, no treatment, or other standard care options. The overall picture is mixed and uncertain: SMT showed small improvements in pain and somewhat larger improvements in function when compared to sham treatment, but the evidence quality was very low due to study design problems and inconsistent results across trials.

When compared to doing nothing, SMT appeared to help more, though again the certainty was limited. When stacked against other common treatments like exercise or other therapies, SMT showed little meaningful difference in pain relief and only small improvements in function.

This review looked at whether spinal manipulation helps people with chronic low back pain. The researchers found that when compared to fake treatment, real manipulation may provide small pain relief and somewhat better ability to move and function, but they cannot be very confident in these findings because the studies had some weaknesses.

If you compared manipulation to doing nothing at all, it appeared to help more noticeably with both pain and getting back to daily activities, though the evidence here is still uncertain. When compared to other common treatments like physiotherapy or exercise, manipulation seemed to work about as well, not clearly better or worse.

The studies reported that serious harm is uncommon, though some people did experience temporary muscle soreness or a brief increase in pain after treatment. The bottom line is that manipulation may help some people, but the evidence is not strong enough to say for certain how much it helps or for whom it works best.

This is a summary of research, not medical advice. Talk to your own healthcare provider about anything affecting your care.

This Cochrane update synthesised evidence from 76 trials with meaningful limitations in trial quality, particularly poor allocation concealment (only 24% of sham-controlled trials managed this adequately) and inadequate blinding, which inflates apparent treatment effects. The comparison against sham treatment is the most methodologically sound subset, revealing very low-certainty evidence for small pain reduction (7 points on a 100-point scale) and medium functional improvement, but with very high inconsistency across studies that raises questions about generalisability.

The no-treatment comparison showed larger apparent effects, though this comparison is vulnerable to expectancy and attention bias. The largest body of evidence compared SMT to other conservative interventions, where low-certainty evidence indicated little to no pain difference and small functional gains, with substantial unexplained heterogeneity limiting confidence.

Adverse events were infrequently reported and limited to transient effects when documented. The review identifies a critical methodological problem: continuing to conduct trials with the same heterogeneous designs, populations, techniques, and dosing protocols will not resolve the underlying uncertainty.