Pre-employment radiography of the lumbosacral spine.
D001416:Back Pain / Q000175:diagnosis; D006801:Humans; D008159:Lumbar Vertebrae / Q000000981:diagnostic imaging*; D009784:Occupational Diseases / Q000175:diagnosis; D009787:Occupational Medicine; D011859:Radiography; D012447:Sacrum / Q000000981:diagnostic imaging*