New nerve root holders during spinal decompression

New nerve root holders have been developed to protect nerve roots and dural sac during spinal bony decompression, especially ii it takes place in the region oi the lateral recess by means of a high speed air drill. Their desi gn derives from the adaptation of common brain spatulas to the anatomy of t he lumbar nerve roots. Their use, together with the contralateral approach (the operative microscopical visualization of the lesion from the side of t he patient opposite to it), represents an available method to protect nervo us structures from operative injuries without superfluous retraction of the m. The contralateral approach permits the visualization of the deepest angl es of the lateral recess without withdrawal of lateral parts of the articul ar facets, important for vertebral stability. In order to achieve satisfact ory results without vertebral instrumental stabilization, the holder assist s in the drilling procedure to enlarge the periradicular space covering the nerve root and helps avoid undue dural tearing or radicular damage.