Published October 28, 2026 · Cochrane systematic review of randomized trials · Important negative finding
Primary source: Ergonomics review, PMID 42946017
Workstation redesign and ergonomic instruction seem intuitively helpful. But preventing symptoms and treating an established disorder are different questions. This update synthesized 20 studies involving 2,478 adults with work-related complaints of the arm, neck, or shoulder.
Compared with no treatment/usual care/placebo, ergonomic interventions produced little or no clear improvement in pain (standardized mean difference −0.23; 95% CI −0.54 to 0.08, four RCTs, 692 participants; low certainty). For function, a comparison against waiting-list control yielded RR 1.06 (0.84–1.34) with moderate certainty. Evidence for sickness absence, recovery, and quality of life also did not show consistent, meaningful gains. Comparisons against exercise were especially uncertain.
Strength and limitations. Prespecified Cochrane synthesis with GRADE evaluation, but protocols, patient populations, outcome metrics, and certainty differ substantially. The review does not establish that all ergonomics is useless, nor does it assess every prevention or workplace-safety program.
Clinical practice: Do not promise pain resolution from ergonomic equipment alone; evaluate occupational demands, exercise, rehabilitation, and specific diagnoses.
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