Patient Outcomes Using an Expandable Spacer

The evaluation is based on the following elements. 1. Safety as measured by the rate of serious operative and post-operative complications. 2. Subjects quality of life, measured by health-related quality of life questionnaires and Subject-reported outcome measures up to 24 months following the procedure, as compared to Subject's preoperative baseline. 3. Global and segmental lumbar lordosis (LL) Patients will be followed upto 24 months post-operative