半环状梯型钢板治疗股骨干粉碎性骨折

AHalfRingLadderPlateforTreatmentofComminutedFemoralShaftFractures

从１９９２～１９９５年作者采用自制的半环状梯型钢板，治疗严重的股骨干粉碎性骨折２０例，２１个股骨干．其中男１７例，女３例．年龄１６～３５岁．在这些病例中，闭合性骨折１８例，开放性骨折２例．依据骨折的不同程度，粉碎性骨折的２１个股骨干分为：Ｉ型４个，Ｉ型１０个，ＩＩ型７个．２０例均经６～３５个月的随访，临床优良率为９４．７％．平均骨愈合时间为１６．５周．与普通钢板或ＡＯ钢板不同为：该钢板由长短两臂经３～４个拱型横梁相连成一半环状框型结构，能对众多骨折碎片进行包容及固定．力学试验表明，该钢板的抗弯力及抗扭转力均优于普通单臂钢板．对股骨严重粉碎性骨折，该钢板具有良好的包容及稳定的固定作用，结构设计合理．

From1992to1995,aself-designedhalfringladderplatewasusedfortreatmentofseverelycommintedfracturesin21femursof20patients.Therewere17malesand3females.Theagesrangedfrom16to35years.AccordingtomodifiedWinquistandHansengradingsystem,4fractureswereclassifiedasgradeⅠ,10asgradeⅡand7asgradeⅢ.Alofthepatientswerefolowedupforaperiodof6to35months,andhadanexcelentandgoodrateof94.7%.Theevidenceofboneunionwasshowedonroutineradiographsatanaverageof16.5weeks.Thesemi-circularladdarplate,differentfromthesinglearmplateorAOplate,hastwoarmsconnectedby3to4archedbridgesandisabletoembraceorcompactnearlyalthefragmentstogethertoprovidesolidfixationforseverelycomminuedfractures.Thebendingandtorsiontestsdemonstratedthattheladdarplatewasmuchstrongerinanti-bendingandanti-torsionthantheconventionalsinglearmplate.