Rusiecka Michalina, Bernal-Sprekelsen Manuel
ENT Department, Hospital Clínic, University of Barcelona Medical School, Barcelona, Spain.
Otol Neurotol. 2014 Dec;35(10):1797-800. doi: 10.1097/MAO.0000000000000467.
A partially or fully absent or largely perforated footplate is a challenging condition that may be encountered during middle ear surgery, especially in patients with a history of chronic ear problems or with previous tympanoplasties.
Retrospective study on a limited number of cases undergoing revision tympanoplasty in which a new footplate was created from the cartilage, and the ossicular chain was reconstructed with a titanium prosthesis in 1 stage. Minimum follow-up was 24 months. Outcome measurements included the preoperative and postoperative bone conduction to assess the function of the inner ear, and the preoperative and postoperative threshold levels of air and bone conduction in 4 frequencies to assess the possible hearing improvement.
Six patients could be included. The audiologic results showed the average air conduction gain of 11 dB. We did not observe any significant deterioration in the bone conduction which, in some cases, even improved (average change of +3 dB). The symptoms related to a perilymphatic fistula were resolved. The technique described herein has proven to be safe and reliable.
Reconstruction of the footplate with autologous cartilage and simultaneous type III tympanoplasty seems to be a promising solution for those rare but challenging cases in which the footplate is partially of fully absent.
中耳手术过程中可能会遇到部分或完全缺失或大部分穿孔的镫骨底板,这是一种具有挑战性的情况,尤其是在有慢性耳部问题病史或曾接受过鼓室成形术的患者中。
对有限数量接受翻修鼓室成形术的病例进行回顾性研究,术中用软骨制作新的镫骨底板,并分1期用钛质假体重建听骨链。最短随访时间为24个月。结果测量包括术前和术后骨导以评估内耳功能,以及术前和术后4个频率的气导和骨导阈值水平以评估可能的听力改善情况。
纳入6例患者。听力学结果显示平均气导增益为11 dB。我们未观察到骨导有任何显著恶化,在某些情况下,骨导甚至有所改善(平均变化为+3 dB)。与外淋巴瘘相关的症状得到缓解。本文所述技术已被证明是安全可靠的。
对于镫骨底板部分或完全缺失这种罕见但具有挑战性的病例,自体软骨重建镫骨底板并同时进行III型鼓室成形术似乎是一种有前景的解决方案。