A 5-year Superion™ IDS Clinical Outcomes Post-Approval Evaluation (SCOPE)

Key Inclusion Criteria: * 45 years of age or older when written informed consent is obtained * Persistent leg/buttock/groin pain, with or without back pain that is consistently relieved by flexion activities (example: sitting or bending over a shopping cart). * Diagnosis of degenerative spinal stenosis of the lumbar spine, defined as the narrowing of the midline sagittal spinal canal (central) and/or narrowing between the facet superior articulating process (SAP), the posterior vertebral margin (lateral access), and the nerve root canal (foraminal). * Subject signed a valid, IRB-approved informed consent form (ICF) provided in English. * Subjects, who, in the opinion of the Clinical Investigator, are able to understand this clinical investigation, cooperate with the investigational procedures and are willing to return for all the required post-treatment follow-ups. * Able to independently read and complete all questionnaires and assessments provided in English Key Exclusion Criteria: * Axial back pain only. * Fixed motor deficit in lower extremity(ies) due to LSS. * Has any pain-related diagnosis, medical/psychological condition or external factors that, in the investigator's medical judgment, might confound reporting of study outcomes (e.g. history of pelvic pain, anginal pain, chronic migraine, involved in litigation, workmen's compensation, spinal tumor) * Participating (or intends to participate) in another drug or device clinical trial that may influence the data that will be collected for this study