Title: Clinical outcomes and safety assessment in elderly patients undergoing decompressive laminectomy for lumbar spinal stenosis: a prospective study A S Jakola(1), A Sørlie(2, 3), S Gulati(1,4), O P Nygaard(1, 3, 5), S Lydersen (6), T Solberg(2, 3). 1. Department of Neurosurgery, St.Olavs Hospital HF, N-7006 Trondheim, Norway. 2. Department of Neurosurgery, University Hospital of North Norway, N-9038 Tromsø, Norway. 3. The Norwegian National Registry for Spine Surgery, SKDE, North Norway Regional Health Authority, Tromsø, Norway. 4. Department of laboratory medicine, Children’s and Women’s Health, Norwegian University of Science and Technology, Trondheim, Norway 5. National Center for Spinal Disorders, Faculty of Medicine, Norwegian University of Science and Technology, Trondheim, Norway 6. Department for Applied Clinical Research, Children’s and Women’s Health, Norwegian University of Science and Technology, Trondheim, Norway. Corresponding author: Asgeir Store Jakola e-mail: asjakola@yahoo.no Telephone: +47 72 57 55 67 Fax: +47 72 57 57 65 Address: Department of Neurosurgery St. Olavs Hospital HF N-7006 Trondheim, Norway Conflict of interests/acknowledgements: Dr. Gulati has received financial support from Sparebanken Møre and the Family Blix Fund for medical research.