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Ossicular deformity without syndrome and ossiculoplasty
Author(s): 
Pages: 329-331
Year: Issue:  5
Journal: CHINESE JOURNAL OF OTORHINOLARYNGOLOGY

Keyword:  听小骨畸形听小骨置换听觉丧失传导性;
Abstract: 目的探讨常见先天性听小骨畸形的临床类型与听骨链重建的方法.方法 25例(39耳)听骨链畸形,其中男9例,女16例,年龄8~54岁,平均(24.8±12.3)岁.双侧传导性聋28耳,单侧11耳,其中左5耳,右6耳.术前听力检查语言频率气骨导差39.9 dB.28耳(其中3例双侧)行鼓室探查,并行听骨链重建术.结果根据Teunissen(1993)分型,Ⅰ型(先天性镫骨固定)3耳,Ⅱ型(先天性镫骨固定+听骨畸形)5耳,Ⅲ型(先天性听骨链畸形,镫骨足板活动)12例(15耳),Ⅳ型(听骨链畸形+蜗窗或前庭窗发育不全)5例(5耳).术中发现畸形类型有镫骨足弓与底板分离、足弓部分缺损、砧骨固定、镫骨上部结构缺损、镫骨上部结构缺损伴前庭窗封闭,少见的有砧骨长脚缺损、镫骨上部结构缺损伴镫骨肌与砧骨长脚连接.听骨链重建方法有全听骨(total ossicular replacement prosthesis,TORP)重建术3耳,部分听骨(partial ossicular replacement prosthesis,PORP)重建术12耳,小窗技术人工镫骨植入8耳(其中采用人工镫骨固定于锤骨柄1耳),半规管开窗1耳,激光在前庭窗开窗(2耳)、鼓岬开窗(2耳)后用筋膜封窗再用TORP植入.术后2周内听力检查平均气骨导差为22.3 dB.结论根据听骨链畸形的类型采用不同听骨链重建术可以提高听力,缩小气骨导差.
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