2000 Volvo Award winner in clinical studies: Lumbar high-intensity zone and discography in subjects without low back problems.

摘要: Study design A prospective observational study of patients with low back pain and those without was performed. Objective To investigate the prevalence significance a high-intensity zone in group asymptomatic for pain, but who had known risk factors lumbar disc degeneration. This compared symptomatic respect to presence anular response discography. Summary background data Some authors have estimated be 86%. They reported strong correlation between positive discography pain. Other investigators evidence either supporting or discounting these findings. Methods Patients underwent physical examination, psychometric testing, plain radiograph, magnetic resonance imaging, The zone, disruption, discographic then were two groups. There strict inclusion criteria both total 109 discs 42 evaluated 143 54 group. determined by standardized on T2-weighted images. Psychometric testing also administered each patient before Standard performed all patients, recorded using visual analog scale according Walsh et al criteria. Results populations 59% 24% In group, 33 (30.2%) found zone. 13 72.7% discography, whereas 38.2% positive. 69.2% 10% normal 50% as 100% results abnormal chronic Conclusions does not reliably indicate internal disruption. Although higher individuals degenerative disease (25%) is too high meaningful clinical use. When injected during same percentage shown painful.