title: Double-blind evaluation of collagenase injections for herniated lumbar discs.
abstract: A randomized clinical trial of 30 patients with refractory lumbar disc disease with evidence of a herniation at a single intervertebral space on the myelogram is presented. Collagenase or a saline placebo was injected into the affected disc. Lack of pain reduction or lack of functional improvement was considered a therapeutic failure. Patients who failed to respond to the placebo could subsequently receive a collagenase injection. Thirty-three percent (33%) of the 15 patients who received a placebo and 80% of the 15 patients who received collagenase were rated successful 8 weeks after injection. The study demonstrates a statistically significant effectiveness of collagenase in the treatment of herniated lumbar disc disease.
mesh_terms: D000328:Adult; D002986:Clinical Trials as Topic; D004311:Double-Blind Method; D005260:Female; D006801:Humans; D007405:Intervertebral Disc Displacement / Q000188:drug therapy*; D008159:Lumbar Vertebrae; D008297:Male; D003012:Microbial Collagenase / Q000009:adverse effects / Q000627:therapeutic use*; D008875:Middle Aged
chemical_list: D003012:Microbial Collagenase