Neurophysiological pain-education for patients with chronic low back pain: a systematic review and meta-analysis

Key points

1. 017 RCTs (313 participants total) were pooled; 6 of 7 trials were rated low quality
2. 02Pain reduced by about 1 point on a 0-10 scale immediately after treatment and at 3 months
3. 03Disability also improved significantly immediately after treatment and at 3 months, with a small to moderate effect
4. 04Fear of movement (kinesiophobia) showed a non-significant trend in favour of NPE
5. 05A tendency toward larger benefit was seen with more intensive, individual NPE sessions

How it was conducted

Design

Systematic review and meta-analysis of randomized controlled trials

Databases searched

Cochrane CENTRAL, Web of Science, Medline, Embase, PsycINFO, CINAHL (search yielded 1100 hits plus 52 additional references)

Included studies

7 RCTs; 6 rated low quality, 1 rated high quality

Participants

313 adults with chronic low back pain (pain lasting 3 months or more); mean age approximately 36-51 across studies

Comparators

Usual care, general practitioner advice, exercise alone, or the same co-intervention without NPE

Primary outcomes

Pain intensity (0-10 scale), disability (RMDQ or QBPDS), and behavioral attitudes (Tampa Scale of Kinesiophobia)

What they found

• Pain immediately after treatment (5 studies, n=212): WMD -1.03 (95% CI -1.52 to -0.55), I2=3.26%, in favour of NPE
• Pain at 3-month follow-up (3 studies, n=116): WMD -1.09 (95% CI -2.17 to 0.00), I2=43.1%, in favour of NPE
• Disability immediately after treatment (7 studies, n=313): SMD -0.47 (95% CI -0.80 to -0.13), I2=38.3%, equivalent to WMD -1.00 (95% CI -1.72 to -0.29) on a 0-10 scale
• Disability at 3-month follow-up (4 studies, n=170): SMD -0.38 (95% CI -0.74 to -0.02), I2=24.1%, equivalent to WMD -0.82 (95% CI -1.56 to -0.05) on a 0-10 scale
• Tampa Scale of Kinesiophobia immediately after treatment (3 studies, n=112): WMD -5.73 (95% CI -13.60 to 2.14), I2=91.0%, non-significant
• Tampa Scale of Kinesiophobia at 3 months (2 studies, n=100): WMD -0.94 (95% CI -6.28 to 4.40), I2=62.1%, non-significant
• GRADE evidence quality: moderate for pain at immediate follow-up; low for pain at 3 months, disability at both time points; low to very low for kinesiophobia

Limitations

• Most included trials were small and low quality, with only one study reporting an a priori sample size calculation
• Blinding of participants was not feasible for educational interventions, and allocation concealment was unclear or missing in several trials
• Subgroup analyses on patient characteristics (age, sex, BMI, education) were not possible due to insufficient reporting in the primary studies
• Only verbal NPE formats were included; written and digital educational materials were excluded, limiting generalisability

Why it matters

For patients

Learning about the neuroscience of pain as part of physiotherapy may modestly reduce pain and difficulty with daily activities, and carries no known side effects.

For clinicians

Adding a brief NPE component to existing treatments appears to produce small but statistically significant improvements in pain and disability, with a tendency toward larger benefit when sessions are individualised and more intensive.

For readers

This meta-analysis provides moderate-quality evidence for a small pain benefit from NPE, but the field needs larger, higher-quality trials with longer follow-up before firm treatment recommendations can be made.