title: Surgical treatment after chemonucleolysis failure.
mesh_terms: D002917:Chymopapain / Q000008:administration & dosage / Q000627:therapeutic use*; D010450:Endopeptidases / Q000627:therapeutic use*; D006801:Humans; D007267:Injections; D007405:Intervertebral Disc Displacement / Q000188:drug therapy / Q000601:surgery*
chemical_list: D010450:Endopeptidases; D002917:Chymopapain