title: Reconstructive techniques study after anterior decompression of multilevel cervical spondylotic myelopathy.
abstract: METHODS
  Retrospectively compared 2 reconstructive techniques after the anterior decompression of multilevel cervical spondylotic myelopathy.
  
  
  OBJECTIVE
  To clinically compare the biomechanical stability and neurologic results of 2 reconstructive techniques after the anterior decompression of multilevel cervical spondylotic myelopathy retrospectively.
  
  
  BACKGROUND
  Previous studies comparing different reconstruction techniques after the anterior decompression of multilevel cervical spondylotic myelopathy have yielded mixed results. Some studies have reported a high incidence of graft-plate extrusion when 2 or more corpectomies are performed and reconstructed with a long segmental anterior plate fixation that spans the strut graft without supplemental posterior cervical fixation, a standalone cage and segmental plate fixation after combination 1 level discectomy and 1 level corpectomy used to treat multilevel cervical spondylotic myelopathy were reported have no evidence of late-onset instrumentation-related failure, although 2 techniques have never been directly compared in a consecutive series of patients clinically.
  
  
  METHODS
  A retrospective study of 59 patients with multilevel (3 levels) cervical spondylotic myelopathy treated with 1 of 2 anterior decompression and reconstruction methods were compared. Copectomy method (39 patients) is 2-level corpectomies and long segment end-construct plate fixation; hybrid method (20 patients) is standalone cage and segmental plate fixation after 1-level discectomy combined with 1-level corpectomy.
  
  
  RESULTS
  The follow-up (mean18 mo) results show both methods had similar, satisfactory recovery of neurologic function (P>0.05). There were 7 cases of graft/plate migrations or dislodgments (17.9%) and 4 of these required revision surgery among 39 patients with corpectomy method, as compared with no graft/implant-related complications or nonunion among 20 patients with hybrid method (P<0.001).
  
  
  CONCLUSIONS
  This study clearly demonstrates that, adequate decompression can be achieved for the multilevel cervical spondylotic myelopathy with both methods, and the hybrid method offers better biomechanical stability and fusion results than the corpectomy method, and obviates the need for staged circumferential procedures.
authors.affiliation: Department of Orthopaedics, Dalian Municipal Central Hospital, Da Lian, Liaoning Province, China. lvgang2008999@sohu.com
authors.forename: Xu
authors.initials: X
authors.lastname: Wei-bing
authors.forename: Shen
authors.initials: S
authors.lastname: Wun-Jer
authors.forename: Lv
authors.initials: L
authors.lastname: Gang
authors.forename: Zhu
authors.initials: Z
authors.lastname: Yue
authors.forename: Jin
authors.initials: J
authors.lastname: Ming-xi
authors.forename: Jia
authors.initials: J
authors.lastname: Lian-shun
mesh_terms: D000368:Aged; D001860:Bone Plates / Q000706:statistics & numerical data; D002574:Cervical Vertebrae / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery*; D019299:Decompression, Surgical / Q000379:methods* / Q000706:statistics & numerical data; D004868:Equipment Failure / Q000706:statistics & numerical data; D005260:Female; D005548:Foreign-Body Migration / Q000209:etiology / Q000473:pathology / Q000503:physiopathology; D006801:Humans; D016268:Internal Fixators / Q000706:statistics & numerical data; D007593:Joint Instability / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery; D008297:Male; D008875:Middle Aged; D017063:Outcome Assessment, Health Care; D011183:Postoperative Complications / Q000209:etiology / Q000473:pathology / Q000503:physiopathology; D011859:Radiography; D016059:Range of Motion, Articular / Q000502:physiology; D019651:Plastic Surgery Procedures / Q000379:methods* / Q000706:statistics & numerical data; D012189:Retrospective Studies; D013117:Spinal Cord Compression / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery*; D013123:Spinal Fusion / Q000379:methods*; D055009:Spondylosis / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery*; D016896:Treatment Outcome; D054854:Vertebroplasty / Q000295:instrumentation / Q000379:methods / Q000592:standards