title: Analysis of gas in vacuum lumbar disc.
abstract: In three cases in which chemonucleolysis with chymopapain was used for the treatment of back and sciatic pain, gas from the vacuum phenomenon of a degenerated lumbar intervertebral disc was recovered. In one of these, the gas analyzed by gas chromatography contained 90%--92% nitrogen.
mesh_terms: D002917:Chymopapain / Q000627:therapeutic use; D005740:Gases / Q000032:analysis*; D006801:Humans; D007405:Intervertebral Disc Displacement / Q000000981:diagnostic imaging / Q000628:therapy; D008159:Lumbar Vertebrae; D009584:Nitrogen / Q000032:analysis; D011859:Radiography; D014618:Vacuum
chemical_list: D005740:Gases; D002917:Chymopapain; D009584:Nitrogen