Objective To investigate the therapeutic effect of percutaneous lumbar diskectomy (PLD) combining with chemonucleolysis (CNL) by injection of collagenase in the treatment of lumbar disc herniation.

• 目的 研究经皮穿刺腰椎间盘切除术和胶原酶化学溶解术联合治疗腰椎间盘突出症的疗效。