• 9437069966

The lumber canal stenosis is usually due to multiple factors like degenerative changes of spinal bone, ligamentum flavum hypertophy, bulging of intervertebral disc and facet thickening with arthopathy. The major neurological compression is typically seen at the level of intralaminar window. Considering this fact, multilevel focal laminotomy is an alternative to wide laminectomy. Such laminotomy also preserve the midline bony and ligamentous complex which shortens the postoperative recovery period. Ideal operation for lumbar canal stenosis would be one that could simultaneously achieve adequate decompression of the neural elements and minimize damage to posterior muscular, ligamentous and bony complex.The facet of superior articular process forms the root of lateral canal/recess, while it is bounded interiorly by posterior surface of vertebral body and disc. The nerve root leaves the sac approximately at the level of the disc and then enters the lateral recess which turns into intervertebral canal at the level of superior margin of pedicle. Under pathological conditions, the intervertebral disc with increasing loading of joints, medial border of superior articular process develop a spondylotic scalloping and as a result of this with added disc protrusion the nerve root is compressed.