Surgical treatment of otosclerosis using a unique stapes prosthesis without a hook

Abstract

Background

During stapes surgery, the Teflon wire piston prosthesis is prone to postoperative ‘slips’ and subsequent necrosis and fracture of the long process of the incus.

Aims/Objective

We invented and used a novel cup-shaped apatite prosthesis to reduce the incidence of necrosis of the long process of the incus and analysed the postoperative results.

Material and methods

Thirty-one ears in 25 patients with otosclerosis who underwent stapes surgery with our apatite prosthesis were evaluated.

Results

The air conduction improved by 24.0 dB (the average) from pre- to post-operation. Additionally, 84.8% of patients achieved an air–bone gap of ≤10 dB for the 4-frequency measurements (p < .01).

Conclusions

Our findings indicate that our new prosthesis was associated with a good postoperative prognosis in patients with otosclerosis.

Significance

Our unique prosthesis yielded good outcomes for the treatment of otosclerosis even in the short term.

Chinese abstract

背景：在镫骨手术期间, 铁氟龙金属丝活塞假体易于术后“滑动”并导致随之而来的砧骨坏死和骨折的漫长过程。

目的：我们发明并使用了一种新颖的杯形磷灰石假体, 以减少砧骨长期坏死的发生率, 并分析了术后效果。

材料和方法：对25例接受用我们的磷灰石假体进行镫骨手术的耳硬化症患者的31只耳朵进行了评估。

结果：术前和术后的空气传导改善了24.0 dB（平均值）。此外, 在4频率测量中, 有84.8％的患者达到了10 dB的气骨间隙（p <.01）。

结论：我们的结果表明我们的新假体与耳硬化症患者的良好的术后预后相关。

意义：我们独特的假体在治疗耳硬化症方面取得了良好的短期效果。

Keywords:

• Stapes prosthesis
• stapedectomy
• otosclerosis

Disclosure statement

The authors declare no conflicts of interest.

Additional information

Funding

This research is supported by a Grant-in-Aid for Scientific Research (C) (grant number 19K09855) from the Ministry of Education, Culture, Sports, Science, and Technology (MEXT).