Lack of evidence for stating 'spinal source' of pain in EXPOSS study.

We read with interest the recent research paper 'A study exploring the prevalence of Extremity Pain of Spinal Source (EXPOSS)' by Rosedale et al. [1]. This study highlights some interesting opportunities for physical therapists and other clinicians practicing Mechanical Diagnosis and Therapy (MDT). However, we would like to address some issues that became apparent on reading this paper.