Vartiainen E, Virtaniemi J, Kemppainen M, Karjalainen S
Department of Otolaryngology, University of Kuopio, Finland.
Otolaryngol Head Neck Surg. 1993 Mar;108(3):251-5. doi: 10.1177/019459989310800308.
Hearing levels of 174 patients (213 ears operated on) with otosclerosis undergoing stapedectomy were analyzed. All patients had followup of 10 years or more, the mean follow-up period being 13.4 years. Eighty-seven ears (41%) underwent posterior crus stapedectomy, and in the remaining 126 ears (59%) a prosthesis was inserted. Large fenestra technique was used in all cases. In the long run, both air conduction and bone conduction thresholds of ears operated on showed remarkable deterioration from the best values obtained 6 to 12 months postoperatively. Ten years after surgery both air conduction and bone conduction thresholds of ears operated on were significantly worse than those of normal controls. At 10 years, 70 percent of the ears operated on had hearing levels (at 0.5 to 2.0 kHz) of 30 dB or better and 88 percent had 40 dB or better. At the last follow-up examination, in 90% of the patients the better hearing ear had a hearing level of 40 dB or better. In 90% of patients with bilateral otosclerosis who had operations in only one ear, the ear operated on had better hearing function than the opposite ear that had not been operated on.
对174例（213耳接受手术）患有耳硬化症并接受镫骨切除术的患者的听力水平进行了分析。所有患者的随访时间均为10年或更长时间，平均随访期为13.4年。87耳（41%）接受了后脚镫骨切除术，其余126耳（59%）植入了假体。所有病例均采用大开窗技术。从长远来看，接受手术的耳朵的气导和骨导阈值与术后6至12个月获得的最佳值相比均有明显恶化。术后10年，接受手术的耳朵的气导和骨导阈值均明显差于正常对照组。在术后10年时，70%接受手术的耳朵（在0.5至2.0 kHz频率）的听力水平为30 dB或更好，88%为40 dB或更好。在最后一次随访检查中，90%的患者听力较好的耳朵的听力水平为40 dB或更好。在仅一侧耳朵接受手术的双侧耳硬化症患者中，90%的患者接受手术的耳朵的听力功能优于未接受手术的对侧耳朵。
