Spine
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Randomized Controlled Trial Clinical Trial
Chronic cervical zygapophysial joint pain after whiplash. A placebo-controlled prevalence study.
The authors developed a diagnostic double-blindfolded survey using placebo-controlled local anesthetic blocks. ⋯ Cervical zygapophysial joint pain is common among patients with chronic neck pain after whiplash. This nosologic entity has survived challenge with placebo-controlled, diagnostic investigations and has proven to be of major clinical importance.