Denticulate ligament dentatotomy.

Between 1980 and 1990, 37 patients with cervical spondylotic myelopathy and syringomyelia underwent posterior decompression by cervical laminectomy and dentatotomy. The preoperative symptoms were compared with the postoperative status. Spasticity and pyramidal signs were reduced.

In Langmayr et al. opinion, Kahn's indication for dentatotomy as described in 1946 is obsolete today. However, they believe that after extensive decompressive laminectomy an additional mobilising effect is recommendable, so that Kahn's operation is still of relevance as an additional procedure in the treatment of this condition ¹⁾.