69 year old male patient came to us in opd with complaints of backache and claudication. The claudication distance was decreasing with time. The backache was primarily on exertion. On examination, the patient had decreased forward bending of spine, palpable step in lower back, straight leg raising test negative on both sides. The neurological examination showed S1 neuro dermatomal involvement. Ankle jerk was absent on both sides. X ray and MRI were done to evaluate the patient further. MRI showed listhesis L5 over S1 with fusion of the two vertebral bodies. There was compression of nerve bundle with marked stenosis at this level. Flexion extension lateral views at this level were taken to confirm any instability at this level. It was confirmed that there was stable fusion between L5 and S1 vertebra. Upon further detailed inquiry from patient, it was found that patient had long standing backache in young age which had decreased over the last decade into a discomfort type of ache, co-relating with fusion of the two vertebras. The long standing backache could have been due to listhesis due to spondylolysis. The patient was taken to operation theatre and posterior decompression with wide laminectomy was done with adequate decompression of neural bundle and the exiting nerve roots at this level. Stability was checked intra-op and not undue movement was noticed. After adequate decompression, the cord was wound pulsating without any dural leak. The wound was closed in multiple layers over gelfoam, without drain. In the immediate postoperative period, neurological status was intact and patient was shifted to recovery.