In episode 4 of Inside the Science we summarize and discuss with the author, Dr. Ron Donelson, the study, A Prospective Study of Centralization of Lumbar and Referred Pain: A Predictor of Symptomatic Discs and Annular Competence. This paper hypothesized that the morphology and image findings of lumbar discs could be predicted by MDT therapists based on their symptom response. Dr. Donelson gives some background to the study, the limitations, big takeaways and an additional paper the avid clinician will want to read.