title: An approach to backache.
mesh_terms: D001416:Back Pain / Q000175:diagnosis / Q000209:etiology / Q000628:therapy; D001696:Biomechanical Phenomena; D003937:Diagnosis, Differential; D006801:Humans; D007403:Intervertebral Disc; D009408:Nerve Compression Syndromes / Q000175:diagnosis; D010146:Pain / Q000209:etiology; D013122:Spinal Diseases / Q000473:pathology; D013126:Spinal Nerve Roots; D013130:Spinal Stenosis / Q000175:diagnosis / Q000209:etiology; D013131:Spine / Q000502:physiology; D013167:Spondylitis, Ankylosing / Q000175:diagnosis; D013168:Spondylolisthesis / Q000175:diagnosis; D013667:Technetium
chemical_list: D013667:Technetium