Ossification of Posterior Longitudinal Ligaments
Ossification of posterior longitudinal ligaments (OPLL) is defined as a chronically progressive disease of ectopic endochondral and membranous ossification of the posterior longitudinal ligaments of unknown etiology Etiology Multifactor condition. COLA1, COLA2, and NPPS genes are associated with the origin of OPLL Posterior longitudinal ligament ↓ 2 layered ↓ Superficial ( Close contact with dura […]
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