Lavy Jeremy, Khalil Sherif
ENT Department, Royal National Throat, Nose and Ear Hospital, London, United Kingdom.
Laryngoscope. 2014 Nov;124(11):2591-3. doi: 10.1002/lary.24652.
OBJECTIVES/HYPOTHESIS: To evaluate the long-term (5-year) results of the shape-memory nitinol stapes piston in the surgical treatment of otosclerosis.
Retrospective case review in a tertiary referral center.
The patients were adults with clinically proven otosclerosis undergoing stapedotomy. Stapedotomy and ossicular chain reconstruction using a shape-memory nitinol stapes piston were performed. The main outcome measure was masked air and bone conduction audiometry.
Forty-eight out of a potential 58 ears had complete audiometric data. The mean preoperative air-bone gap was 29.2 dB (standard deviation [SD] 9.4). The postoperative gap at 1 year was 4.6 dB (SD 3.1), and P at 5 years was 7.0 dB (SD 6.2).
These data suggest that the Smart piston provides a stable long-term hearing result in the surgical treatment of otosclerosis.
目的/假设：评估形状记忆镍钛合金镫骨活塞在耳硬化症外科治疗中的长期（5年）效果。
在三级转诊中心进行回顾性病例分析。
患者为经临床证实患有耳硬化症并接受镫骨切除术的成年人。采用形状记忆镍钛合金镫骨活塞进行镫骨切除术和听骨链重建。主要观察指标为掩蔽气导和骨导听力测定。
58只耳朵中有48只具有完整的听力测量数据。术前平均气骨导间距为29.2dB（标准差[SD]9.4）。术后1年的间距为4.6dB（SD 3.1），5年时为7.0dB（SD 6.2）。
这些数据表明，智能活塞在耳硬化症的外科治疗中能提供稳定的长期听力效果。
