Generating New Evidence for Lumbar Spondylolisthesis: Registries and Randomized Controlled Trials

Area of Science:

• Neurosurgery
• Orthopedic Surgery
• Spinal Surgery

Background:

• Randomized prospective studies show operative management benefits symptomatic lumbar spondylolisthesis.
• No universally accepted surgical treatment exists despite current randomized controlled trial (RCT) evidence.
• Nonadherence in RCTs poses a challenge for evaluating treatment effects in spinal procedures.

Purpose of the Study:

• To discuss the challenges of evaluating surgical treatment effects in spinal procedures due to nonadherence in randomized controlled trials (RCTs).
• To highlight the value of prospective registry data in reflecting current surgical practice and potentially overcoming RCT limitations.

Main Methods:

• Review of existing randomized prospective studies on lumbar spondylolisthesis management.
• Analysis of the impact of nonadherence on treatment effect evaluation in spinal surgery RCTs.
• Consideration of prospective registry data as a complementary data source.

Main Results:

• RCT evidence demonstrates benefits of operative over nonoperative management for symptomatic lumbar spondylolisthesis.
• Nonadherence is a significant confounder in RCTs for spinal procedures.
• Prospective registry data offer continuous, large-scale insights into real-world surgical practice.

Conclusions:

• While RCTs provide evidence, nonadherence complicates definitive treatment conclusions for lumbar spondylolisthesis.
• Prospective surgical registries are valuable for understanding current practice and potentially evaluating treatment efficacy beyond RCT limitations.