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镫骨手术时常用耳屏软骨膜封闭卵圆窗,取材容易、封闭效佳、活动性好。耳屏软骨膜软骨形成导致镫骨切除后耳聋尚未见报道。作者经治一例有耳硬化家族史女性,16岁,双耳进行性聋3年。一年前行左耳镫骨底板全切,以耳屏软骨膜封闭卵圆窗,术后听力一度改进。后又降至平均气导53dB。再次手术见卵圆窗下缘有大块软骨形成限制槌、砧骨活动。切除软骨再成形后听力升至24dB。病检见软骨覆以立方和柱状上皮,软骨与上皮间有结缔组织,相当原封闭用软骨膜,提示软骨膜之软骨形成面朝向前庭。讨论:软骨发生于软骨膜。软骨膜浸于血中则受刺激而产生软骨。避免软骨膜
Tarsus traumatology often use the tragus cartilage closed oval window, drawn easily, effective closure, good activity. Tragus perichondrium cartilage led to denervation after tarsal resection has not been reported. The author of a case of otosarcoma family history of women, 16 years old, binaural deafness for 3 years. A year ago, the left ear stapes bottom plate cut to the tragus cartilage closed oval window, after hearing was improved. After that, the average air conduction was reduced to 53dB. See again the lower edge of the oval window has a large cartilage formation limit gavel, incus activity. After resection of the cartilage, the hearing increased to 24 dB. Pathological examination showed cartilage covered with cubic and columnar epithelium, connective tissue between the cartilage and epithelium, the original closure of the perichondrium, suggesting cartilage cartilage formation facing the vestibule. Discussion: Cartilage occurs in the perichondrium. Perichondrium immersed in blood are stimulated to produce cartilage. Avoid perichondrium