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Lumbar zygapophyseal joint meniscoids: evidence of their role in chronic intersegmental hypomobility.

Meniscoid bodies of the zygapophyseal joints are considered by some to be a cause of the Acute-Locked Back Syndrome. These meniscoid bodies have been identified anatomically and histologically, but not yet in a formal clinical investigation. The authors provide a brief review of the zygapophyseal meniscoid-related literature, present new documentation of histological variations and offer some possible consequences of the presence of mechanically pathological meniscoids. It is herein proposed that an important sequela to the pathophysiology of these structures is that of chronic intersegmental hypomobility. We invite the scientific community to pursue further investigations of these meniscoids. Magnetic resonance imaging is one method suggested to investigate the meniscoid in vivo.