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Papers of the Week
The Prevalence of “Pure” Lumbar Zygapophysial Joint Pain in Patients with Chronic Low Back Pain.
Authors
Abstract
Estimates of the prevalence of lumbar zygapophysial joint (Z joint) pain differ in the literature, as do case definitions for this condition. No studies have determined the prevalence of "pure" lumbar Z joint pain, defined as complete relief of pain following placebo-controlled diagnostic blocks.