Yamamoto E
Department of Otolaryngology, Kobe City General Hospital, Japan.
Laryngoscope. 1988 Apr;98(4):402-4. doi: 10.1288/00005537-198804000-00009.
Long-term observations on the ceramic ossicular replacement prosthesis (CORP) were performed. Extrusion rates were 8.3% for CORP-P and 5.2% for CORP-T, with most extrusions occurring within 2 years. Hearing results were satisfactory. Air-bone gaps at 1 year were within 10 dB in 44.8% with CORP-P and 31.2% with CORP-T. At 3 to 5 years, air-bone gaps were within 10 dB in 42.2% and 33.3%, respectively. It was found that the short-term results were maintained even for the long period. Unsatisfactory hearing gains were caused mainly by the displacement or extrusion of CORP which could be prevented by fixation with the cartilage plate, deepening of the base of CORP-P, fixing of the base of CORP-T with the fascia, and additional fixing with the malleus handle and chorda tympani nerve.
对陶瓷听小骨置换假体（CORP）进行了长期观察。CORP-P的脱出率为8.3%，CORP-T为5.2%，大多数脱出发生在2年内。听力结果令人满意。使用CORP-P时，1年时气骨导差在10 dB以内的比例为44.8%，使用CORP-T时为31.2%。在3至5年时，气骨导差在10 dB以内的比例分别为42.2%和33.3%。结果发现，即使在长期内，短期结果仍得以维持。听力改善不理想主要是由于CORP移位或脱出所致，可通过用软骨板固定、加深CORP-P的底部、用筋膜固定CORP-T的底部以及用锤骨柄和弦鼓膜神经进行额外固定来预防。
