This is an open-label non-randomised, prospective, post market study to evaluate the performance of Inductigraft (osteoinductive synthetic bone graft) in patients receiving posterolateral lumbar spine fusion through assessment of successful fusion at 12 months post operation using x-rays and CT scans. Quality of life questionnaires also used to assess clinical outcome measures such as pain and quality of life. Patients followed up for 24 months after surgery.