Some conservative interventions are more effective than others for people with chronic non-specific neck pain: a systematic review and network meta-analysis

Question: Which is the most effective conservative intervention for patients with non-specific chronic neck pain (CNSNP)?Design: A systematic review and network meta-analysis of randomised clinical trials.Participants: Adults with CNSNP of at least 3 months duration. Interventions: All available pharmacological and non-pharmacological interventions.Outcome measures: The primary outcomes were pain intensity and disability. The secondary outcome was adverse events.Results: Overall, 119 RCTs (12,496 patients; 32 interventions) were included. Risk of bias was low in 50.4% of trials, unclear in 22.7% and high in 26.9%. Compared with inert treatment, a combination of active and/or passive multimodal non-pharmacological inventions (eg, exercise and manual therapy) were effective for pain on a 0-to-10 scale at 1 month (MD range 0.84 to 3.74) and at 3 to 6 months (MD range 1.06 to 1.49), and effective on disability on a 0-to-10 0 scale at 1 month (MD range 10.26 to 14.09) and 3 to 6 months (MD range 5.60 to 16.46). These effects ranged from possible to definite clinical relevance. Compared with inert treatment, anti-inflammatory drugs alone or in combination with another non-pharmacological treatment did not reduce pain at 1 month or 3 to 6 months. At 12 months, no superiority was found over inert treatment on both outcomes. Most mild adverse events were experienced following acupuncture/dry needling intervention. On average, the evidence varied from low to very low certainty.Conclusions: While multimodal non-pharmacological interventions may reduce pain and disability for up to 3 to 6 months of follow-up when compared with inert treatment, the evidence was very uncertain about their effects. Better quality and larger trials are needed to improve the certainty of evidence. Registration: PROSPERO CRD42019124501 [Castellini G, Pillastrini P, Vanti C, Bargeri S, Giagio S, Bordignon E, Fasciani F, Marzioni F, Innocenti T, Chiarotto A, Gianola S, Bertozzi L (2022) Some conservative interventions are more effective than others for people with chronic nonspecific neck pain: a systematic review and network meta-analysis. Journal of Physiotherapy 68:244- 254](c) 2022 Australian Physiotherapy Association. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).