Diagnosis and Treatment of Low Back Pain: A Joint Clinical Practice Guideline from the American College of Physicians and
the American Pain Society

Figure 1. ). Do not use this algorithm for back pain associated with major trauma, nonspinal back pain, or back pain due to
systemic illness. CRP = C-reactive protein; EMG = electromyography; ESR = erythrocyte sedimentation rate; MRI = magnetic resonance
imaging; NCV = nerve conduction velocity. Initial evaluation of low back pain (LBP
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Ann Intern Med
October 2, 2007
vol. 147
no. 7
478-491