title: "Reverse Bohlman" technique for the treatment of high grade spondylolisthesis in an adult population.
abstract: OBJECTIVE
  Surgical techniques for effective high-grade spondylolisthesis (HGS) remain controversial. This study aims to evaluate radiographic/clinical outcomes in HGS patients treated using modified "Reverse Bohlman" (RB) technique.
  
  
  METHODS
  Review of consecutive HGS patients undergoing RB at a single university-center from 2006 to 2013. Clinical, surgical, radiographic parameters collected.
  
  
  RESULTS
  Six patients identified: five with L5-S1 HGS with L4-L5 instability and one had an L4-5 isthmic spondylolisthesis and grade 1 L5-S1 isthmic spondylolisthesis. Two interbody graft failures and one L5-S1 pseudoarthrosis. Postoperative improvement of anterolisthesis (62.3% vs. 49.6%, p = 0.003), slip angle (10 vs. 5°, p = 0.005), and lumbar lordosis (49 vs. 57.5°, p = 0.049).
  
  
  CONCLUSIONS
  RB technique for HGS recommended when addressing adjacent level instability/slip.
authors.affiliation: NY Spine Institute/NYU Medical Center Hospital for Joint Diseases, New York, NY, United States.
authors.forename: Angel E
authors.initials: AE
authors.lastname: Macagno
authors.affiliation: Orthopaedic Surgery, NYU Hospital for Joint Diseases, New York, NY, United States.
authors.forename: Saqib
authors.initials: S
authors.lastname: Hasan
authors.affiliation: Orthopaedic Surgery, NYU Hospital for Joint Diseases, New York, NY, United States.
authors.forename: Cyrus M
authors.initials: CM
authors.lastname: Jalai
authors.affiliation: Orthopaedic Surgery, NYU Hospital for Joint Diseases, New York, NY, United States.
authors.forename: Nancy
authors.initials: N
authors.lastname: Worley
authors.affiliation: Orthopaedic Surgery, NYU Hospital for Joint Diseases, New York, NY, United States.
authors.forename: Alexandre B
authors.initials: AB
authors.lastname: de Moura
authors.affiliation: Orthopaedic Surgery, NYU Hospital for Joint Diseases, New York, NY, United States.
authors.forename: Jeffrey
authors.initials: J
authors.lastname: Spivak
authors.affiliation: Orthopaedic Surgery, NYU Hospital for Joint Diseases, New York, NY, United States.
authors.forename: John A
authors.initials: JA
authors.lastname: Bendo
authors.affiliation: NY Spine Institute/NYU Medical Center Hospital for Joint Diseases, New York, NY, United States.
authors.forename: Peter G
authors.initials: PG
authors.lastname: Passias
keywords: High grade spondylolisthesis; Outcomes; Reverse Bohlman