Total laminectomy for the removal of idem tumor has been widely used , but postoperative complications often develop like  kyphosis,spinal instability and pain. In this case we perform unilateral lamino–foraminotomy with purpose to preserve musculoligamentous attachments and posterior bony elements as much as possible. Patient was mobilized on second post operative day with no neurological symptoms and at followup after 2 months there was no spinal deformity or spinal instability.