title: Durable intermediate-to long-term outcomes after minimally invasive transiliac sacroiliac joint fusion using triangular titanium implants.
abstract: BACKGROUND
  Sacroiliac joint (SIJ) fusion (SIJF), first performed 95 years ago, has become an increasingly accepted surgical option for chronic SIJ dysfunction. Few studies have reported intermediate- or long-term outcomes after SIJF.
  
  
  OBJECTIVE
  The objective of this study is to determine patient-based outcomes after SIJF for chronic SIJ dysfunction due to degenerative sacroiliitis or SIJ disruption at ≥3 years of follow-up.
  
  
  METHODS
  Consecutive patients who underwent SIJF prior to December 2012 were contacted over phone or through email. Participants completed questionnaires in clinic, over phone or by email, regarding SIJ pain, activities related to SIJ dysfunction, and the Oswestry Disability Index. Charts were reviewed to extract baseline parameters and the clinical course of follow-up.
  
  
  RESULTS
  One hundred seven patients were eligible and participated in this study. Mean (standard deviation) preoperative SIJ pain score was 7.5 (1.7). At mean follow-up of 3.7 years, the mean SIJ pain score was 2.6 (representing a 4.8-point improvement from baseline, P<0.0001) and the mean Oswestry Disability Index was 28.2. The ability to perform activities commonly impaired by SIJ dysfunction showed positive improvements in most patients. SIJ revision surgery was uncommon (five patients, 4.7%). Fourteen patients (13.1%) underwent contralateral SIJF during follow-up, 25.2% of patients had additional non-SIJ-related lumbar spine or hip surgeries during follow-up.
  
  
  CONCLUSIONS
  In intermediate- to long-term follow-up, minimally invasive transiliac SIJF was associated with improved pain, low disability scores, and improved ability to perform activities of daily living.
authors.affiliation: Center for Spinal Stenosis and Neurologic Care, Lakeland, FL.
authors.forename: Donald
authors.initials: D
authors.lastname: Sachs
authors.affiliation: Orthopaedic Center of Southern Illinois, Mount Vernon, IL.
authors.forename: Don
authors.initials: D
authors.lastname: Kovalsky
authors.affiliation: Precision Spine Care, Tyler, TX.
authors.forename: Andy
authors.initials: A
authors.lastname: Redmond
authors.affiliation: BayCare Clinic, Green Bay, WI.
authors.forename: Robert
authors.initials: R
authors.lastname: Limoni
authors.affiliation: Columbia Orthopaedic Group, Columbia, MO.
authors.forename: S Craig
authors.initials: SC
authors.lastname: Meyer
authors.affiliation: Riverside Medical Center, Kankakee, IL.
authors.forename: Charles
authors.initials: C
authors.lastname: Harvey
authors.affiliation: SF Spine Group at St Mary's Spine Center, San Francisco, CA, USA.
authors.forename: Dimitriy
authors.initials: D
authors.lastname: Kondrashov
keywords: chronic low back pain; multicenter study; sacroiliac joint fusion