Single bypass fixation for the treatment of lumbar spondylolisthesis: Anatomical insights and technical note

Background: Lumbar spondylolisthesis usually requires surgical management for the stabilization of the spine and to relieve patients of their symptoms. This study aims to provide anatomical insights and evaluate the efficacy of single bypass fixation in the surgical treatment of lumbar spondylolisthesis. This technique aims to stabilize the spine with minimal manipulation of the slipped vertebra, thereby reducing potential complications and improving clinical outcomes.

Methods: This is a retrospective study carried out at a neurosurgical hospital in Baghdad, Iraq, including 35 cases of lumbar spondylolisthesis subjected to single bypass fixation treatment between December 2012 and December 2019. The procedure involves stabilizing the lumbar spine by fixing the vertebrae above and below the affected segment using pedicle screws and rods, guided by fluoroscopy to ensure accurate placement and avoid neurovascular injury. Laminectomy was performed as needed to decompress the spinal cord and nerve roots. Autograft or allograft bone was used to promote fusion around the stabilized segment. Pre- and postoperative clinical and radiological assessments were conducted. Pre- and postoperative clinical and radiological assessments were done.

Results: There have been enormous gains in terms of pain relief, neurological status, and spinal stability, with the achievement of high fusion rates and low complication rates.

Conclusion: Single-level bypass fixation proves efficacy for lumbar stabilization in spondylolisthesis patients, with the best clinical result and less complication for patients.