title: Failed back surgery syndrome: review and new hypotheses.
abstract: Failed back surgery syndrome (FBSS) is a term used to define an unsatisfactory outcome of a patient who underwent spinal surgery, irrespective of type or intervention area, with persistent pain in the lumbosacral region with or without it radiating to the leg. The possible reasons and risk factors that would lead to FBSS can be found in distinct phases: in problems already present in the patient before a surgical approach, such as spinal instability, during surgery (for example, from a mistake by the surgeon), or in the postintervention phase in relation to infections or biomechanical alterations. This article reviews the current literature on FBSS and tries to give a new hypothesis to understand the reasons for this clinical problem. The dysfunction of the diaphragm muscle is a component that is not taken into account when trying to understand the reasons for this syndrome, as there is no existing literature on the subject. The diaphragm is involved in chronic lower back and sacroiliac pain and plays an important role in the management of pain perception.
authors.affiliation: Department of Cardiology, Foundation Don Carlo Gnocchi, IRCCS, Institute of Hospitalization and Care, S Maria Nascente, Milan, Italy; School CRESO, Osteopathic Centre for Research and Studies, Falconara Marittima, Ancona, Italy.
authors.forename: Bruno
authors.initials: B
authors.lastname: Bordoni
authors.affiliation: School CRESO, Osteopathic Centre for Research and Studies, Falconara Marittima, Ancona, Italy.
authors.forename: Fabiola
authors.initials: F
authors.lastname: Marelli
keywords: chronic pain; diaphragm; fascia; pain; spine FBSS
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