To evaluate a new endoscopic technique for lumbar spinal canal decompression.

104 consecutive patients suffering of neurogenic claudication were included in the study.

Patients were operated using the irrigation endoscopic decompression technique. Mean Follow up was 28 months Primary outcome measures were assessed using the Oswestry Disability Index [19] and the modified Macnab Criteria All statistical calculations were done using computer programs SPSS (Statistical Package for the Social Science; SPSS Inc., Chicago, IL, USA) version 15 for Microsoft Windows

Inclusion Criteria:

1. Neurogenic claudication or radicular leg pain with or without back pain, and/or a neurological deficit
2. Symptoms and signs correlating with moderate to severe spinal canal stenosis as shown on MRI. (Degenerative and congenital bony stenosis were included)
3. Failure of 3 months conservative treatment
4. Grade I degenerative spondylolisthesis and degenerative scoliosis

Exclusion Criteria:

1. Segmental Instability
2. Lytic Spondylolisthesis

2- Predominant low back pain