Ho Steven Y, Battista Robert A, Wiet Richard J
Department of Otolaryngology, Northwestern University School of Medicine, Chicago, Illinois, USA.
Otol Neurotol. 2003 Mar;24(2):149-52. doi: 10.1097/00129492-200303000-00005.
To report the efficacy of titanium middle ear prosthesis for ossicular reconstruction.
Retrospective chart reviews were performed for 25 patients who had undergone titanium ossicular implants between January 1, 1999, and June 1, 20001.
Tertiary otology referral center.
All patients had a minimum of 6 months of postoperative follow-up and no evidence of recurrent otologic disease.
All patients had undergone ossiculoplasty using titanium middle ear implants.
Comparisons of preoperative and postoperative pure tone averages were performed. Air-bone gap closures and implant extrusion rates were measured. RESULTS Overall mean pure tone averages improved 22.2 dB with air-bone gap improvement at 20.9 dB. Fifty-six percent of patients achieved air-bone gap less than 20 dB postoperatively. The overall extrusion rate was 4%. However, with the placement of cartilage graft interposed between the prosthesis and the tympanic membrane, no extrusion was observed.
Titanium implants provide comparable hearing improvement compared with other materials. The extrusion rate seems quite low if cartilage interposition graft is inserted. Its ease of handling, biocompatible properties, and sound conducting properties improve its efficacy as an ossicular implant.
报告钛质中耳假体用于听骨链重建的疗效。
对1999年1月1日至2000年6月1日期间接受钛质听骨植入的25例患者进行回顾性病历审查。
三级耳科学转诊中心。
所有患者术后至少随访6个月,且无耳科疾病复发迹象。
所有患者均使用钛质中耳植入物进行了听骨成形术。
对术前和术后的纯音平均听阈进行比较。测量气骨导差缩小情况和植入物脱出率。结果总体平均纯音平均听阈提高了22.2 dB,气骨导差改善了20.9 dB。56%的患者术后气骨导差小于20 dB。总体脱出率为4%。然而,在假体与鼓膜之间植入软骨移植片后,未观察到脱出情况。
与其他材料相比,钛质植入物能提供相当的听力改善效果。如果插入软骨间置移植片,脱出率似乎相当低。其易于操作、生物相容性和传声特性提高了其作为听骨植入物的疗效。