前言[目的]探讨颈椎后路改良Z型单开门椎管扩大成形术治疗
颈椎后纵韧带骨化症（OPLL）的疗效。[方法]对36例颈椎后纵韧带骨化症行Z型单开门椎管扩大成形术,参照日本JOA17分评分法,分析所有病例近期疗效。[结果]36例平均随访18.6个月,从术前（8.3±3.2）分改善到（13.8±2.5）分,平均改善率为58.6%。影像显示术前31例颈椎前突型,3例术后变为直线型;5例术前为直线型,术后未变。无1例变为颈椎后突型。颈椎屈伸活动度减少近1/3及轴向痛常发生。[结论]本法治疗颈椎OPLL,减压彻底,椎管扩大充分,防止再关门,是一种安全有效的方法。
[Objective]ToinvestigatetheeffectsoftheexpansiveZ-open-doorlaminoplastyfortheossificationofposteriorlongitudinalligaments（OPLL）.[Methods]Thirty-sixcasesofOPLLwereoperatedbytheexpansiveZ-open-doorlaminoplasty.AccordingtoJOAscore（17Points）theproximateeffectsofallpatientswereanalyzed.[Results]Allcaseswerefollowed-upforaverage18.6months.JOAimprovedfrom8.3preoperativelyto13.8postoperatively.Improvedrateaveraged58.6%.Imageshow:3of31casesofanteriorprotrud...
