How Reproducible Are Manual Therapy Interventions in Trials for Low Back Pain? A Scoping Review

OBJECTIVES: To assess the reproducibility of manual therapy interventions used in clinical trials for low back pain (LBP), and summarize knowledge gaps in assessing the reproducibility of manual therapy interventions for LBP. DESIGN: Scoping review. LITERATURE SEARCH: PubMed, Cumulative Index to Nursing and Allied Health Literature (CINAHL), Cochrane Central Register of Controlled Trials (CENTRAL), and Embase were searched for trials from inception through April 2023. STUDY SELECTION CRITERIA: Randomized controlled trials were included if they described the use of manual therapy to treat LBP in adults 18 to 65 years old and were accessible in English. DATA SYNTHESIS: The Consensus on Exercise Reporting Template (CERT) checklist, used for exercise reporting, was previously modified for manual therapy reporting. This 11-item modified CERT was used to extract details of manual therapy reporting in the included trials. Frequency counts were calculated to identify items most and least commonly reported. RESULTS: Of 128 trials, none reported all 11 items of the modified CERT. The most commonly reported items were the description of how the application of manual therapy was decided (n = 113, 88.3%) and a description of adjunct interventions provided (n = 82, 64.1%). The least reported items were the description of an associated home program (n = 27, 21.1%) and a detailed description of the application of manual therapy (n = 22, 17.2%). CONCLUSION: Reporting of manual therapy interventions in trials investigating LBP was poor overall, limiting the reproducibility of these treatments. Using a checklist designed explicitly for manual therapy intervention reporting may improve reproducibility of these interventions and help align clinical outcomes with experimental findings. J Orthop Sports Phys Ther 2024;54(4):248-257. Epub 29 January 2024. doi:10.2519/jospt.2024.12201