Balkany T, Gantz B J, Steenerson R L, Cohen N L
Department of Otolaryngology, University of Miami, FL, USA.
Otolaryngol Head Neck Surg. 1996 Jan;114(1):4-11. doi: 10.1016/S0194-59989670275-9.
Ossification of the fluid spaces of the cochlea occurs often in candidates for cochlear implantation, especially children. When noted before surgery on computerized tomography, ossification previously was thought to contraindicate cochlear implantation because of possible mechanical obstruction and uncertainty about the level of function that could be achieved by stimulating an ossified cochlea. However, during the preceding 6 years, techniques have been developed that permit implantation in ossified cochleas. We present a systematic approach that has been developed to treat the three clinically important categories of cochlear ossification: round window niche obliteration, inferior segment obstruction, and upper segment obstruction. Case reports are presented for each of these three drill-out procedures, demonstrating results often similar to those expected for implantation of the nonossified cochlea.
耳蜗内液腔的骨化在人工耳蜗植入候选者中经常出现，尤其是儿童。在计算机断层扫描术前发现骨化时，以前认为骨化会因可能的机械阻塞以及刺激骨化耳蜗所能达到的功能水平不确定而成为人工耳蜗植入的禁忌证。然而，在过去6年中，已开发出允许在骨化耳蜗中植入的技术。我们提出一种已开发出的系统方法，用于治疗临床上重要的三类耳蜗骨化：圆窗龛闭塞、下段阻塞和上段阻塞。针对这三种钻孔手术中的每一种都给出了病例报告，显示结果通常与非骨化耳蜗植入预期的结果相似。
