title: Posterior transcanal lumbar interbody fusion for septic vertebral fracture pseudarthrosis and sitting imbalance.
abstract: METHODS
  Case report.
  
  
  OBJECTIVE
  To describe a new method to treat septic pseudarthrosis of the lumbar spine via a transcanal approach.
  
  
  BACKGROUND
  Septic pseudarthrosis of the spine after multiple unsuccessful anterior and posterior surgeries for vertebral fracture represents a challenge for spine surgeons.
  
  
  METHODS
  Septic pseudarthrosis associated with dorsal fistula developed in a 40-year-old paraplegic man after unsuccessful combined anterior and posterior instrumentation for L3-burst fracture and sagittal sitting imbalance caused by collapsing spine.
  
  
  RESULTS
  The instrumentation was removed together with meticulous pseudarthrosis debridement, fistula excision, and intravenous antibiotics plus continuous irrigation. Three months later, the pseudarthrosis area was approached via a posterior transcanal route because of the preceding multiple anterior transperitoneal and retroperitoneal surgeries. Posterior interbody instrumentation and fusion were performed with titanium mesh cages filled with autologous iliac bone graft. Pedicle screw-rod instrumentation was additionally applied to reinforce the interbody fusion and restore lumbar lordosis. Following this operation, the patient was ambulated with a custom made plastic jacket in his wheelchair. The postoperative course was uneventful, and the patient regained his sitting ability progressively. Four months later, the blood count analysis was within normal limits. Radiologically, there was a complete fusion at the level of instrumentation, while the preoperative lost lumbar lordosis was sufficiently restored. The patient was reemployed 6 months after surgery in his previous work in a sitting position, and, during the last observation 4 years later, he had normal labor analysis and lumbar lordosis.
  
  
  CONCLUSIONS
  This extremely rare case focuses on the use of the transcanal approach to treat adequately lumbar septic pseudarthrosis and restore lumbar lordosis in definitively paraplegic patients in whom no anterior approach can be used.
authors.affiliation: Department of Orthopaedics, General Hospital Agios Andreas, Patras, Greece. korovess@otenet.gr
authors.forename: Panagiotis
authors.initials: P
authors.lastname: Korovessis
authors.forename: Georgios
authors.initials: G
authors.lastname: Petsinis
authors.forename: Georgios
authors.initials: G
authors.lastname: Koureas
authors.forename: Spyridon
authors.initials: S
authors.lastname: Zacharatos
mesh_terms: D000328:Adult; D001860:Bone Plates; D006801:Humans; D016268:Internal Fixators; D007593:Joint Instability / Q000209:etiology / Q000601:surgery; D008159:Lumbar Vertebrae / Q000293:injuries*; D008297:Male; D010264:Paraplegia; D011187:Posture; D011542:Pseudarthrosis / Q000209:etiology / Q000601:surgery*; D016103:Spinal Fractures / Q000150:complications / Q000601:surgery*; D013123:Spinal Fusion / Q000009:adverse effects* / Q000295:instrumentation; D013203:Staphylococcal Infections / Q000150:complications / Q000188:drug therapy / Q000473:pathology / Q000601:surgery; D013530:Surgical Wound Infection / Q000209:etiology / Q000601:surgery*