Radiographic asymmetric structural changes in the lumbar spine, which appear to be correlated with pelvic obliquity and the consequent postural lumbar scoliosis; are described in nonacute low-back-pain patients with a leg length difference of > 9 mm and in those with no leg length difference (0-3 mm). With leg length inequality, concavities in the end-plates of lumbar vertebral bodies, wedging of the 5th lumbar vertebrae and traction spurs appear. No relationship to symptoms is suggested.