·270史堡皇皇咽噬苤麴2b型苤查!!!!生!旦箜塑鲞筮兰塑坠i!』Q!!尘i!!!!型!艘!旦!型堕!丛!!垡:垒P巫!!!!!:y!!:!!:盟!:!钛合金听骨I期听骨链重建临床疗效分析陈兵陶朵朵【摘要】目的探讨钛合金听骨赝复物在鼓室成形术中I期听力重建的效果。方法回顾性分析676例2008年6月至2011年1月行开放式鼓室成形伴I期听骨链重建术的病例,从中筛选具有完整中长期随访资料者106例(107耳),根据应用钛合金为全部听骨赝复物(totalossicularreplacementprosthesis,TORP)或部分听骨赝复物(partialossicularreplacementprosthesis,PORP)将其分为PORP组(86耳)和TORP组(21耳),随访6至30个月,分别比较两组手术前后0.5、1、2、4kHz纯音气导平均听阈、平均气骨导差的变化及术后听力重建成功率的情况。结果PORP组术前气导平均听阈为(49.0±12.6)dBHL,术后为(31.3±7.1)dBHL,听力平均提高了17.7dBHL。TORP组术前气导平均听阈为(48.5±4.8)dBHL,术后为(29.4±4.7)dBHL,听力平均提高了19.1dBHL。PORP组术前平均气骨导差为(27.0±7.1)dB,术后为(14.5±4.6)dB,气骨导差闭合12.5dB。TORP组术前平均气骨导差为(29.1±7.2)dB,术后为(16.3±4.2)dB,术后气骨导差闭合12.9dB。两组听力重建的成功率分别为83.7%和71.4%。两组在听力提高、气骨导差闭合、听力重建成功率等方面差异均无统计学意义(P值均>0.05)。总体听骨假体排出率为0.9%(1/107)。结论应用钛合金听骨赝复物行鼓室成形术I期听力重建,可有效提高听力,其排异率低。【关键词】听小骨假体;听觉丧失,传导性;耳外科手术Efficacyofossicularchainreconstructionusingtitaniumimplantsinsingle-stagetympanoplastyCHENBing,TAODuo—duo.DepartmentofOtologyandSkullBaseSurgery,EyeEarNoseandThroatHospital,FudanUniversity,Shanghai200031,ChinaCorrespondingauthor:CHENBing,Emaif:b_chen66@yahoo.eorltcn【Abstract】0bjectiveToexploretheefficacyoftotalandpartialossicularchainreconstructionusingtitaniumimplants.MethodsTotalof106patients(107ears)underwentossiculoplastyusingtitaniumfromJune2008toJanuary2011.Eighty—sixearshadpartialossicularreplacementprosthesis(PORP)and21carshadtotalossicularreplacementprosthesis(TORP).Patientdatawerecollectedretrospectivelyfromthedatabaseofsurgicalcases.Patientswereassessedduring6to30monthspostoperativelytoestablishmiddle—andlong—termhearingresults.Averagepostoperativeair—conductiongainandair—bonegap(ABG)weremeasuredatfourfrequencies:0.5,1,2,and4kHz.ResultsPostoperativeair—bonegapof20dBorlessthan20dBwasobtainedin83.7%ofPORPcasesversus71.4%ofTORPcases.A11thecasesobtainedsignificantpostoperativeair—conductiongains.Thechangeinair—bonegap(definedasthedifferencebetweenthemeansofpreoperativeandpostoperativeABG1was12.5dBforPORPpatientsand12.9dBfortheTORPpatients.TherewasnostatisticallysignificantdifferencebetweentheTORPandPORPgroups.Prosthesisexclusionwasobservedinonecase(0.9%).ConclusionProsthesesusingtitaniumtypecouldgivegoodfunctionalresultsandstabilitywithlOWexclusionratetopatientspresentingchronicotitismedia.【Keywords】Ossicularprosthesis;Hearingloss,conductive;Otologicsurgicalprocedures在慢性中耳炎患者中,用合适的材料和技术进行听骨链重建,恢复中耳传声变压功能是鼓室成形术的重要部分。用何种材料重建听骨链一直是耳科DOI:10.3760/cma.j.issn.1673-0860.2012.04.002基金项目:卫生部卫生行业科研专项基金(201202005)作者单位:200031上海,复旦大学附属眼耳鼻喉科医院耳神经颅底外科通信作者:陈兵,Email:b_chen66@yahoo.COnl.an.论著学者研究的重点内容。目前临床行听骨链重建的听骨赝复物主要有羟基磷灰石和钛合金听骨赝复物,后者的优点在于生物相容性、稳定性好,在质量、强度、稳定性上...