Spontaneous improvement of olisthetic scoliosis in children following lumbosacral fusion for high-grade spondylolisthesis: A report of four new cases and systematic review of the literature

Author:

Mehlman Charles T1,Crawford Alvin H2

Affiliation:

1. Division of Pediatric Orthopaedic Surgery, The Crawford Spine Center, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH, USA

2. University of Cincinnati College of Medicine, UC Health/University Hospital, Cincinnati, OH, USA

Abstract

Background: The study aim was to present four new well-documented cases of spontaneous improvement of olisthetic scoliosis and to analyze well-documented cases from the literature. Methods: Surgical log search and systematic review were conducted. Inclusion criteria were (1) age less than 18 years, (2) symptomatic high-grade (≥50%) spondylolisthesis, (3) scoliosis ≥20o, (4) primary surgical treatment via lumbosacral fusion, (5) complete x-rays, and (6) minimum 1-year radiographic follow-up or until curve resolution. Results: A total of 13 patients with average age of 13.9 years were included in the study, 4 from the authors’ surgical logs and 9 from the literature. Slip percentage of L5-S1 ranged from 51% to 95%. Olisthetic curve magnitude averaged 34.6° (range: 20°–45°) with majority (8/13) demonstrating long thoracic curves with lateral trunk shift. All but one of these were apex right with rightward trunk shift. The remainder of the curves were isolated lumbar curves, with an apex left morphology without trunk shift. Eleven of the 13 patients showed curve improvement following isolated lumbosacral fusion. Three patients experienced a decrease in curve magnitude of 12°–28° and eight patients enjoyed complete resolution (≤10°) of their scoliosis. Conclusion: The current study summarizes 13 well-documented cases of olisthetic scoliosis (4 new cases and 9 from the literature) that associated with symptomatic high-grade spondylolisthesis. All were treated via a primary posterior lumbosacral fusion strategy. Eleven of the 13 curves showed spontaneous improvement (8 complete resolution of scoliosis) following their lumbosacral surgery. Level of evidence: Therapeutic level IV.

Publisher

SAGE Publications

Subject

Orthopedics and Sports Medicine,Pediatrics, Perinatology and Child Health

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