An ultrasound evaluation of the relationship between changes in the lumbar perimuscular layer and Body Mass Index in people with non-specific lower back pain

Mechanisms underlying non-specific lower back pain are still poorly understood. In an ultrasound-based study, Langevin et al. [1] found differences in the lumbar connective tissue structures in people with non-specific lower back pain (LBP) compared to people without (no-LBP). The aim of this study is to extend the work of Langevin and colleagues, and evaluate the relationship between the lumbar perimuscular layer and Body Mass Index (BMI) in LBP and no-LBP people.