title: [Localization for collagenase injection through the lateral crypt for lumbar disc herniation].
abstract: OBJECTIVE
  To find a more reliable and effective localization method for collagenase injection through the lateral crypt for the treatment of lumbar disc herniation.
  
  
  METHODS
  Before collagenase injection for lumbar disc chemonucleolysis, the site with obvious tenderness was labeled with a lead marker on the surface of the intervertebral space, followed by a more accurate localization with the assistance of X-ray, chest fluoroscopy and CT.
  
  
  RESULTS
  Satisfactory results were achieved in 88.3% of the cases using the new localization method, with an overall improvement rate of 95.9%, which were 10.5% and 6.7% higher than those of cases without using the method.
  
  
  CONCLUSIONS
  Localization with lead markers in combination with X-ray, chest fluoroscopy and CT is more accurate, safe, economic and effective for collagenase injection through the lateral crypt in the treatment of lumbar disc herniation.
authors.affiliation: Department of Radiology, People's Hospital of Gaozhou City, Gaozhou 525200, China. zhupeigui999@yahoo.com.cn
authors.forename: Pei-gui
authors.initials: PG
authors.lastname: Zhu
authors.forename: Peng-cheng
authors.initials: PC
authors.lastname: Qiu
mesh_terms: D000328:Adult; D017364:Collagenases / Q000008:administration & dosage*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007267:Injections; D007405:Intervertebral Disc Displacement / Q000628:therapy*; D008159:Lumbar Vertebrae; D008297:Male; D008875:Middle Aged
chemical_list: D017364:Collagenases