Pedicular lumbosacral spine fusion for adult/adolescent lumbar developmental high-grade spondylolisthesis.

Background: Few series report on the management of high-grade spondylolisthesis (HGS) in adolescents and young adults. This review highlights a series of six consecutive cases with developmental (dysplastic) HGS successfully managed with L3 or L4 to S1 transpedicular screw placement, rather than /noninstrumented lumbosacral fusion.

Methods: The six patients with HGS, according to the Meyerding Grading, presented with low back pain and bilateral sciatica (2016-2020). Patients averaged 19.8 years of age and underwent posterior transpedicular L3 or L4-S1 screw fusions. They were all monitored for at least 6 postoperative months.

Results: None of the six patients developed any major perioperative/postoperative complications; only one patient had severe postoperative back pain that slowly improved over 3 months. All the patients were clinically improved postoperatively, uniformly demonstrated fusion on postoperative CT studies, and considered the operation worthwhile.

Conclusion: Posterior transpedicular screw fixation of the lumbosacral spine is an efficient and safe technique for the treatment of L3 or L4 to L5-S1 HGS. It is a suitable instrumented technique for managing adult/adolescent HGS and offers an alternative to the more typically performed /noninstrumented L4-S1 procedures.