摘要
Objective: Toanalyzethecausesofdistalfemoralnonunionanddelayedunionandassesstheoutcomeofthecorrespondingtreatment,retrogradeintramedullaryinterlockingnail(RIIN). Methods: FromJune1995toDecember1998,15patients(9malesand6females)withdistalfemoralnonunionanddelayedunionweretreatedwithRIIN.Theaverageageofthepatientswas34.5years(23-46years).Bonegraftingwasperformedin10patients,closedreamingwasdoneintheother5patients.Correctionosteotomywasperformedin2patients,andintra-articularreleaseofkneeadhesionin11patients.X-rayexaminationandkneesocietyclinicalratingsystem(KSS)wereusedtoevaluatetheresults. Results: Allfractureswerefollowedupforatleast9monthswithaveragefollow-updurationof14.5months(9-33months).Solidunionwasdocumentedinallpatientsat6.4monthsonaverage.Therewerenoinfectionsormalunionsinthisseries.Basedonthefinalfollow-updata,acceptablefunctionalrangeofmotion(ROM)ofover90°wasachievedinmostpatients.TheaverageROMwas93.5°withsignificantimprovementof28°(42.7%,P＜0.05)comparedwiththepreoperativeROM.Theaveragekneescorewas96.ExcellentROMemergedin13patients.Thekneefunctionscorewas90.5onaverage. Conclusions: Themaincausesofdistalfemoralnonunionanddelayedunionareimproperindicationsandimproperuseoftheimplants.RIINisaneffectivealternativefortreatmentofdistalfemoralnonunionanddelayedunionbecauseitcanprovideastableandreliablefixationwhichisbeneficialforearlyfunctionalexerciseofknee.Bonegrafting,closedreamingandintra-articularreleaseofkneeadhesionshouldbeconsideredinordertoenhancethebonehealingandimproveROMandthekneefunction.
出版日期
2001年03月13日（中国期刊网平台首次上网日期，不代表论文的发表时间）
