Minimally Invasive Surgery Versus Traditional Open Surgery In The Treatment Of Single Level Lumbar Stenosis

Inclusion Criteria: * Age 18 to 75 years; * Patient has single level degenerative lumbar spinal stenosis and an indication for a single level instrumented lumbar fusion for the treatment; * Symptoms persisting for at least three months prior to surgery; * Given written Informed Consent; * Able and agree to fully comply with the clinical protocol and willing to adhere to follow-up schedule and requirements. Exclusion Criteria: * Prior lumbar spinal fusion at any level; * Other non-degenerative spinal conditions (e.g. infectious, traumatic, metabolic, inflammatory, neoplastic, structural or other pathology) that may have an impact on subject safety, wellbeing or the intent and conduct of the study; * Any condition that cannot be treated with mini-invasive unilateral decompression and fusion; * History or presence of any other major neurological disease or condition that may interfere with the study assessments (e.g. significant peripheral neuropathy, multiply sclerosis); * Previous enrollment in this study, current enrollment or plans to be enrolled in another study (in parallel to this study).