title: The loose back: an unrecognized syndrome.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D001416:Back Pain / Q000175:diagnosis*; D003937:Diagnosis, Differential; D005260:Female; D006615:Hip / Q000502:physiology; D006801:Humans; D007403:Intervertebral Disc / Q000473:pathology; D007592:Joint Diseases / Q000503:physiopathology; D007596:Joints / Q000502:physiology; D008023:Ligaments, Articular / Q000503:physiopathology*; D008297:Male; D008875:Middle Aged; D009068:Movement; D011446:Prospective Studies; D012737:Sex Factors; D013131:Spine / Q000502:physiology / Q000503:physiopathology*; D013166:Spondylitis / Q000503:physiopathology; D013168:Spondylolisthesis / Q000503:physiopathology