Reineke U, Ebmeyer J, Plett D, Winkler H, Sudhoff H
Klinikum Bielefeld, Klinik für Hals-Nasen-Ohrenheilkunde, Kopf- und Halschirurgie, Bielefeld.
Laryngorhinootologie. 2010 May;89(5):271-5. doi: 10.1055/s-0029-1246209. Epub 2010 Mar 10.
SUPERELASTIC NITINOL STAPES PROSTHESESINTRODUCTION: Many different prostheses are available for stapes surgery. The newly designed Nitinol piston band-shaped stapes prosthesis could minimize postoperative complications due to its new superelastic characteristic and design.
A stapedectomy and implantation of superelastic Nitinol piston stapes prosthesis was performed in 22 patients with a mean age of 45.2 years. Examination and audiometry was performed pre- and postoperatively.
The average observed air-bone-gap in all frequencies was 12.8 dB postoperatively, whereas in the frequencies 0.5-4 kHz ABG was under 10 dB in 68.2% of the patients, between 10 and 15 dB in 18.2% and between 15 and 20 dB in 9.1% of the patients. No patient showed air-bone-gap of more than 20 dB. One patient missed follow-up examination.
In stapes surgery the step of fixation of the prosthesis onto the incus is critical. Implantation of the new Nitinol piston stapes prosthesis is facilitated due to the superelasticity and the design of the prosthesis. Crimping is not needed anymore. Postoperative hearing results are very good comparable to other Nitinol (shape memory) or titanium prostheses. Long-term results in a larger number of patients will be studied in the future.
超弹性镍钛诺镫骨假体
镫骨手术有多种不同的假体可供选择。新设计的镍钛诺活塞带状镫骨假体因其新的超弹性特性和设计，可将术后并发症降至最低。
对22例平均年龄45.2岁的患者进行了镫骨切除术并植入超弹性镍钛诺活塞镫骨假体。术前和术后进行了检查和听力测定。
术后所有频率的平均气骨导间距为12.8dB，而在0.5 - 4kHz频率范围内，68.2%的患者气骨导间距低于10dB，18.2%的患者在10至15dB之间，9.1%的患者在15至20dB之间。没有患者气骨导间距超过20dB。1例患者未进行随访检查。
在镫骨手术中，将假体固定在砧骨上的步骤至关重要。由于假体的超弹性和设计，新的镍钛诺活塞镫骨假体的植入变得更加容易。不再需要压接。术后听力结果与其他镍钛诺（形状记忆）或钛制假体相比非常好。未来将对更多患者进行长期研究。
