Trends in the global burden of low back pain and neck pain in individuals aged 15 to 49 years, 1990 to 2021, and projections through 2036: An age-period-cohort analysis study.

The objective of this study is to assess global trends and cross-country inequalities in low back pain (LBP) and neck pain (NP) burdens among adolescents and adults aged 15 to 49 years from 1990 to 2021 and project the disease burden through 2036. Data from the 2021 Global Burden of Disease study were used to analyze trends in the prevalence and years lived with disability for LBP and NP from 1990 to 2021. Age-standardized prevalence rates (ASPR) and years lived with disabilities were calculated, and trends were assessed using the average annual percent change (AAPC).