Objective To study the diagnosis of thoracic myelopathy caused by ossification of ligamenta flava(OLF) and the effect of the improved surgical procedure.
目的探讨胸椎黄韧带骨化症的诊断特点及改良手术的疗效。
Objective To deepen the knowledge of the ossification of posterior longitudinal ligament(OPLL) plus ossification of ligamenta flava(OLF) in cervical spine.
目的深化对颈椎后纵韧带骨化（OPLL）合并黄韧带骨化（OLF）的认识。
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