Do adverse events after manual therapy for back and/or neck pain have an impact on the chance to recover? A cohort study.

Background: Manual therapy is a commonly used treatment for patients with back and neck pain. Studies have shown that manual therapy-related adverse events are mainly short in duration and mild or moderate by their intensity, affecting up to 50% of the patients. If the presence of adverse events has an impact on the chance to recover from back/neck pain is poorly understood. The aim of this study was to investigate if mild or moderate adverse events after manual therapy has an impact on the chance to recover from back/neck pain in men and women. Methods: A prospective cohort study of 771 patients with at least three treatment sessions in a randomized controlled trial performed in January 20…