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Cochleostomy. Long term results.

The original technique of the operation of cochleostomy is described. It should be considered as conservative operation, since it produces an "ostomy" of the cochlear promontory bone, joining the spiral ligament and mucosa of middle ear, without opening of the Cochlea. There is no risk of iatrogenic anacusis. The follow up of 178 cases with more than 10 years after surgery is described. The results are significantly better than endolymphatic sac surgery.