Hehl K, Schumann K, Beck C, Schöttle W
Abteilung V. Hals-Nasen-Ohren-Heikunde, Bundeswehrkrankenhauses Ulm.
Laryngorhinootologie. 1989 Sep;68(9):490-2. doi: 10.1055/s-2007-998383.
Chronic inflammations of the middle ear are characterised by perforation of the tympanic membrane as well as hearing loss, due to disintegration in the incudostapedial joint. Usually the perforation is easily restored by means of available modern procedures; on the other hand, failure of the reconstruction of the ossicular chain, especially of the incudostapedial joint, is not uncommon. Hence, the improvement of hearing capacity is transitory, since later, due to scars, graft lateralisation results in a dislocation of the primarily reconstructed ossicular chain. The patient's hearing capacity is then as poor as it has been before surgery. The aim of this study is to demonstrate the ways of satisfactory reconstruction of the incudostapedial joint by means of glass-ionomer cement: 1. Scar tissue connecting the ossicles in slight defects of the incudostapedial joint can be stabilised by glass-ionomer cement leading to a reasonable sound transmission. 2. If the incus has to be removed in case of a more serious defect, the columella can be properly fixed to the stapes by means of glass-ionomer cement without the risk of scar-induced lateralisation. 3. The fixation of the stapes prosthesis' wire loop to the incus can be effectively achieved by glass-ionomer cement.
中耳慢性炎症的特征是鼓膜穿孔以及听力损失，这是由于砧镫关节解体所致。通常，通过现有的现代手术方法，穿孔很容易修复；另一方面，听骨链重建失败，尤其是砧镫关节重建失败并不罕见。因此，听力改善是暂时的，因为后来由于瘢痕形成，移植片侧移会导致最初重建的听骨链脱位。患者的听力随后会和手术前一样差。本研究的目的是展示用玻璃离子水门汀满意重建砧镫关节的方法：1. 在砧镫关节轻度缺损时，连接听骨的瘢痕组织可用玻璃离子水门汀稳定，从而实现合理的声音传导。2. 如果在更严重的缺损情况下必须切除砧骨，可通过玻璃离子水门汀将小柱正确固定于镫骨，而无瘢痕引起侧移的风险。3. 玻璃离子水门汀可有效实现镫骨假体钢丝环与砧骨的固定。
