摘要
用自备的聚丙交酯（ｐｏｌｙｌａｃｔｉｄｅ，ＰＬＡ）栓内固定治疗犬的股骨髁间骨折，旨在考察材料的力学性能以预测其在骨折治疗领域的应用前景。采用自身对照，治疗组以ＰＬＡ栓２枚成角度固定骨折，对照组未行任何固定。结果：（１）以ＰＬＡ栓内固定治疗的骨折均正常愈合，其愈合周期与传统金属内固定无异，而对照组骨折均发生移位，最后成畸形愈合。（２）ＰＬＡ材料在骨组织内，其剪切力于第二周下降１８％，第四周下降３２．７％。结论：自备的ＰＬＡ材料在３周内能维持足够的强度保证负重部位松质骨骨折的愈合。
Theauthorsinvestigatedthemechanicalpropertyofinternalfixationtreatmentofinter-condylarfracturesofthefemurindogsusingtheirselfdesignedbiodegradablepolylactide(PLA)rods.Folowingreductionofthefracture,theexperimentalsideswerefixedwith2PLArodsincrossingdi-rectionsandthesamekindoffractureswereproducedinthecontralateralsidewithoutanyfixationtobeusedascontrols.Theresultsrevealedthatalspecimenshadsolidbonyunionwithoutdislocationandthefixationwasasstrongasthosefixedwithmetalicdevices.Displacementsanddeformitiesformedfi-nalyinthecontrolgroup.TheauthorsconcludedthatthePLArodsexhibitedasatisfactoryabilitytomaintainthemechanicalstrengthofbonyunionduringthethreeweeksofinternalfixationofthecancel-lusbonyfragmentsunderbodyweightbearing.
出处
《中华骨科杂志》
CAS
CSCD
北大核心
1996年第10期659-661,共3页
Chinese Journal of Orthopaedics
