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Forty-nine patients with low-back pain referred for flexion-extension radiographs due to suspicion of lumbar instability were studied to examine the relationship between the clinical presentation and the presence of radiographic instability of the lumbar spine. Patients had a mean age of 39.2 (±11.3) years, with a mean Oswestry score of 20.4% (±13.3). The median duration of symptoms was 78 days. All...
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