title: One piece cervical device for cervical spine surgery.
abstract: METHODS
  This study analyzed the use of the one piece cervical device (OPCD) surgically inserted to treat atlanto-axial or subaxial subluxation. Operative results, techniques, and the enhanced correction mechanism were studied.
  
  
  OBJECTIVE
  The results were correlated to provide a rationale for posterior cervical spinal fusion.
  
  
  BACKGROUND
  Wiring techniques were generally performed for posterior fusion. Recently, the Luque rod has been used on the cervical spine.
  
  
  METHODS
  One hundred eighty-seven patients were analyzed clinically and radiologically. The operative techniques were detailed and the corrective mechanism explained through biomechanical considerations.
  
  
  RESULTS
  The patients were followed from 2 to 13 years. The results were 94% satisfactory. No poor or worsening cases were encountered.
  
  
  CONCLUSIONS
  Satisfactory operative results showed that the OPCD is safe, convenient, and reliable. It can be used in all areas of the cervical spine. The primary reason for these benefits is the enhanced correction mechanism of the OPCD.
authors.affiliation: Department of Orthopedic Surgery, Mitsui Memorial Hospital, Tokyo, Japan.
authors.forename: H
authors.initials: H
authors.lastname: Mitsui
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D001172:Arthritis, Rheumatoid / Q000150:complications; D001268:Atlanto-Axial Joint / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery*; D002574:Cervical Vertebrae / Q000601:surgery*; D002648:Child; D002675:Child, Preschool; D004867:Equipment Design; D005260:Female; D006801:Humans; D004204:Joint Dislocations / Q000175:diagnosis / Q000209:etiology / Q000601:surgery*; D008137:Longitudinal Studies; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D019736:Prostheses and Implants; D011859:Radiography; D013123:Spinal Fusion; D016896:Treatment Outcome