A Systematic Review of Classification Systems for Cervical Ossification of the Posterior Longitudinal Ligament.

Global Spine J · 2019 · PMC6362555 · PMID 30775213

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may be significantno p-value reported

Appropriate classification of OPLL is critical as there may be significant variations in neurological presentation, surgical outcomes, disease progression, and risk of complications across subtypes of OPLL.

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