title: Documentation of outcomes for sacroiliac joint fusion: does prior spinal fusion influence the outcome?
abstract: OBJECTIVE
  The purpose of this prospective case series (level II) was to determine the clinical outcomes of anterior SIJ fusion, comparing the outcomes of patients who had prior spinal fusions at any level compared to patients who have not.
  
  
  METHODS
  This prospective study included 25 patients who underwent SIJ fusion with anterior plate fixation. All patients had failed non-operative treatment, had a positive Patrick test, and positive response to intra-articular SIJ injections with greater than 50 % pain relief. Patients had follow-up at 3, 6, 9 and 12 months where they completed Oswestry disability index (ODI) and Short Musculoskeletal Functional Assessment (SMFA) surveys. Outcome data are available for 19 patients who completed pre-operative and 12-month follow-up surveys. Their average time of the final follow-up was 1.1 years (range 10-33 months).
  
  
  RESULTS
  Significant improvements between pre-operative and the final follow-up in ODI (p = 0.007) and SMFA (p = 0.01) were observed; the ODI assessed outcomes in patients who had previous spinal fusion surgery were significantly worse than those that did not at the final follow-up (p = 0.04).
  
  
  CONCLUSIONS
  Patients who have not undergone prior spinal fusion surgery, regardless of age, gender, and BMI have better outcomes following anterior SIJ fusion.
authors: Department of Orthopaedic Surgery, University of Minnesota, 2450 Riverside Av., Suite R200, Minneapolis, MN, 55454, USA.
authors: Nate
authors: N
authors: Slinkard
authors: Julie
authors: J
authors: Agel
authors: Marc F
authors: MF
authors: Swiontkowski
mesh_terms: D000328:Adult; D000368:Aged; D018771:Arthralgia / Q000601:surgery*; D015992:Body Mass Index; D001860:Bone Plates; D004185:Disability Evaluation; D004282:Documentation; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D017116:Low Back Pain / Q000601:surgery*; D008297:Male; D008875:Middle Aged; D011446:Prospective Studies; D012446:Sacroiliac Joint / Q000601:surgery*; D013123:Spinal Fusion / Q000379:methods*; D016896:Treatment Outcome
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