The authors consider the consequences and treatment of any error during and after stapedectomy, and present the usually less developed complications of stapedec-tomies: postoperative cochlear drops, tinnitus, vertigo. They also mention the other complications of stapedial surgery, and they particularly advocate the half-posterior stapedectomy technique, associated with a sufficiently large venous interposition.The authors had no cases of severe permanent cochlear loss during the first postoperative month in a series of more than 4000 stapedectomies.