ClinicalTrials.gov has posted results from NCT00534235, a completed post-approval study comparing the Coflex interlaminar stabilisation device with spinal fusion for lumbar spinal stenosis.

The registry reports actual enrolment of 322 participants and includes long-term safety and effectiveness outcome tables.

The posted registry data require careful interpretation alongside the full protocol and any peer-reviewed publications. This summary does not claim superiority for either procedure.