Conclusion Via-back routepuncture chemonucleolysis is a simple, safe and effective method for the treatment of sequestered lumbar disk herniation with far less complication.

• 结论经背后入路直接穿刺脱出的椎间盘组织行胶原酶溶解术是一种操作简单、安全、有效的新方法，可减少并发症的发生。