title: Radiographic mobility of the lumbar spine and its relation to clinical back motion.
abstract: A sample of 194 examinees (117 women and 77 men), representative of the population, with a history of low back pain, were examined clinically and radiographed. The angles between vertebrae at the levels of L4-L5 and L5-S1 were measured from the lateral lumbar erect, maximal flexion, and maximal extension views. Average mobility at L4-L5 was 14.5 degrees in women and 13.4 in men, and at L5-S1 11.5 degrees in women and 12.1 in men. Mobility became more restricted with increasing age both in women and men; especially at L4-L5. In women decreased radiographic mobility at L4-L5 was significantly (p = 0.002) correlated with restricted side-bending and rotation found at the physical examination. These correlations were clearly less significant among men. At L5-S1, restricted extension in women but restricted flexion and Schober's test in men were significantly correlated with decreased radiographic mobility.
authors.affiliation: Rehabilitation Research Centre, Social Insurance Institution, Turku, Finland.
authors.forename: J
authors.initials: J
authors.lastname: Korpi
authors.forename: M
authors.initials: M
authors.lastname: Poussa
authors.forename: M
authors.initials: M
authors.lastname: Heliövaara
mesh_terms: D000328:Adult; D001416:Back Pain / Q000000981:diagnostic imaging* / Q000503:physiopathology; D005260:Female; D006801:Humans; D008159:Lumbar Vertebrae / Q000000981:diagnostic imaging* / Q000503:physiopathology; D008297:Male; D008875:Middle Aged; D009068:Movement; D011859:Radiography; D012447:Sacrum / Q000000981:diagnostic imaging* / Q000503:physiopathology