title: [Non-specific lower back pain: In search of the origin of pain].
abstract: Lower back pain is a condition considered benign and with a specific cause determined only in 15% of patients. In the past years this concept has varied, because many papers have described no benign condition leading to back pain, citing their capacity to cause disability. Through many different diagnostic techniques it is possible to identify the structures capable of producing back pain. This identification, and the level of evidence of the interventional techniques, is the aim of this paper.
authors.affiliation: Clínica del Dolor, Hospital Severo Ochoa, Leganés, Madrid, España.
authors.forename: Joaquín
authors.initials: J
authors.lastname: Insausti Valdivia