The goals of this paper were to define the concept of instability, to describe the way it can be
assessed, to report on impairments of the spine stabilization system in patients with low back
pain (LBP), to cite the recommended exercises and, lastly, to examine the results of
programs based on lumbar stabilization. Patients suffering from lumbar instability appear to
belong to a particular subgroup of subjects with LBP. In the literature, several definitions of
lumbar instability have been proposed. Radiological instability, for instance, differs from …