简介：AbstractBackground:The purpose of this study was to analyze cases of AO31-A2 intertrochanteric fractures (ITFs) and to identify the relationship between the loss of the posteromedial support and implant failure.Methods:Three hundred ninety-four patients who underwent operative treatment for ITF from January 2003 to December 2017 were enrolled. Focusing on posteromedial support, the A2 ITFs were divided into two groups, namely, those with (Group A, n = 153) or without (Group B, n = 241) posteromedial support post-operatively, and the failure rates were compared. Based on the final outcomes (failed or not), we allocated all of the patients into two groups: failed (Group C, n = 66) and normal (Group D, n = 328). We separately analyzed each dataset to identify the factors that exhibited statistically significant differences between the groups. In addition, a logistic regression was conducted to identify whether the loss of posteromedial support of A2 ITFs was an independent risk factor for fixation failure. The basic factors were age, sex, American Society of Anesthesiologists (ASA) score, side of affected limb, fixation method (intramedullary or extramedullary), time from injury to operation, blood loss, operative time and length of stay.Results:The failure rate of group B (58, 24.07%) was significantly higher than that of group A (8, 5.23%) (χ2 = 23.814, P < 0.001). Regarding Groups C and D, the comparisons of the fixation method (P = 0.005), operative time (P = 0.001), blood loss (P = 0.002) and length of stay (P= 0.033) showed that the differences were significant. The logistic regression revealed that the loss of posteromedial support was an independent risk factor for implant failure (OR = 5.986, 95% CI: 2.667–13.432) (P < 0.001).Conclusions:For AO31-A2 ITFs, the loss of posteromedial support was an independent risk factor for fixation failure. Therefore, posteromedial wall reconstruction might be necessary for the effective treatment of A2 fractures that lose posteromedial support.

简介：本期给大家带来的是来自四川省青神县青神中学高10级（6）班的罗梦同学获得一等奖的作文，看看她是如何组句谋篇的吧。

简介：本期给大家带来的是来自四川省青神县青神中学高10级（6）班的罗梦同学的一等奖作文，看看她是如何组句谋篇的吧。

简介：本期给大家带来的是来自四川省青神县青神中学高10级（6）班的罗梦同学的一等奖作文，看看她是如何组句谋篇的吧。

简介：Manyofusbelievethataperson'smindbecomeslessactiveashegrowsolder.Butthisisnot.true,accordingtoDr.LissyF.Jarvik,professorofpsychiatry(精神病学)attheUniversityofCalifomia,LosAngeles,andaboardmemberoftheNewCenterforAgingattheVeteransHospital.Shehasstudiedthementalfunctioningofagingpersonforseveralyears.

简介：Ashopkeeperwhosellsgoodsformorethanwhathepaidforthemmakesaprofitonthetransaction.Ontheotherhand,onewhosellsgoodsforlessthanwhathepaidforthemmakesalossonthetransaction.Theprofit(orloss)madeonatransactionisoftenexpressedasapercentageofthecostprice(ie.thepricepaidbytheshopkeeperfortheitem).

简介：TheanalysisofcelllossratesinanATMMuxwithlossprioritiesisanimportantprobleminthe-studyoftrafficcontrolinATMnetworks.Inthispaper,thelossratesofthecellswithdifferentprioritiesinanATMMuxareanalyzedbyapproximatingtheactualinputprocesswithtwo-stateMMDPandfluidflowtechnique,andtheanalyticalexpressionsoftherelationbetweenthelossratesandthebuffersizeareobtained.Simulationshowsthattheapproachissullicientlyaccurateforapplications.

简介：AbstractPurpose:To analyze the curative effect and technical points of a modified posteromedial approach in the treatment of Klammer III posterior Pilon fracture.Methods:A retrospective analysis of patients with Klammer III posterior Pilon fractures were conducted in our department from January 2018 to December 2019. Before the surgery, the patients were fully relieved of swelling and pain, and a comprehensive examination was carried out. The posteromedial approach exposed the posterior and medial fracture block of the distal tibia. According to the fracture of external malleolus, it is determined whether to combine a lateral incision and protect tendons and vascular nerves by a retractor, and then perform a fracture reduction and internal fixation. Postoperatively, the patients were treated with analgesia, detumescence, anticoagulation and rehabilitation exercise. The American orthopaedic foot and ankle society (AOFAS) score and visual analogue score were recorded at regular follow-up after surgery. A t-test was used for the comparison of the preoperative and final AOFAS score.Results:There were 7 male and 13 female (n = 20) included in the study, aged 22 to 88 years (average age 54.2 years). The injury mechanisms were falling from a height (n = 7), traffic accident (n = 6), walking injury (n = 2) and heavy injury (n = 5). The postoperative follow-up duration was 12—24 months (mean 16.95 months). The AOFAS score of the 20 patients before and after surgery were compared. The preoperative AOFAS score was 38.90 ± 3.91, and the final AOFAS score was 80.55 ± 4.20, (p < 0.001). The mean final visual analogue scores at rest, active and weight-bearing walking were 0.30, 0.85 and 1.70, respectively. One patient reported poor postoperative wound healing and required a return to hospital for debridement and anti-infection treatment.Conclusion:In the treatment of Klammer III posterior Pilon fractures, the modified posteromedial approach can fully expose the fracture block and the collapsed articular surface of the medial malleolus, achieve good reduction and internal fixation with limited injury of the tendon and vascular nerves, and have a better prognosis.

简介：Aftercarefulinvestigationsandrepeateddiscussions,cadressenttosupportTibetfromFujianprovincehaveworkedoutaplantoaidTibetinthecomingthreeyear.

简介：SincethefoundingofNewChinain1949,accordingtotheConstitutionofthePeople’sRepublicofChina,thecentralgovernmenthasmadeitabasicstatepolicytohelpethnicminorities-inhabitedborderareaswiththeirpolitical,economicandculturaldevelopment,andtoleadalltheethnicgroupsofChinaontotheroadtocommonprosperity.

简介：ＥＣＯＮＯＭＩＣＳＵＰＰＯＲＴＰＯＬＩＣＹＩＮＧＥＲＭＡＮＹｂｙＳｏｎｇＣｈｅｎｇｙｕＡｔｔｈｅｉｎｖｉｔａｔｉｏｎｏｆｔｈｅＩｎｓｔｉｔｕｔｅｏｆＩｎｔｅｒｎａｔｉｏｎａｌＶｏｃａｔｉｏｎａｌＴｒａｉｎｉｎｇＣｏｏｐｅｒａｔｉｏｎａｔｔｈｅＮｏｒｄ...

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简介：ＲｅｆｏｒｍｉｎＯｌｄＡｇｅＳｕｐｐｏｒｔＣｈｉｎａｉｓｐｒｅｓｅｎｔｌｙｕｎｄｅｒｇｏｉｎｇａｄｒａｓｔｉｃｔｒａｎｓｉｔｉｏｎｆｒｏｍａｔｒａｄｉｔｉｏｎａｌｔｏｍｏｄｅｒｎｓｏｃｉｅｔｙｉｎｗｈｉｃｈｌａｒｇｅｆａｍｉｌｉｅｓａｒｅｇｒａｄ?..

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简介：客观：为了介绍posteromedial，从胫骨为以后的十字形的系带(打印机控制语言)的多骨的撕裂的减小和附件通过gastrocnemius的中间的头的中间的边阶来临。方法：通过posteromedial的起作用的减小和内部固定从1998年2月在我们的部门gastrocnemius走近到2000年3月的有PCL的胫骨的附件经历了的avulsed的十一个病人。皮切口被颠倒沿着gastrocnemius和以后的囊的中间的头的中间的边阶塑造L被把暴露中间的边阶和侧面的收回，避免腿弯部的神经与血管的结构的损坏。在那以后，以后的囊垂直地有点中间地被把到以后的intercondylarsulcus并且就在手指触诊放的以后的中间的胫骨的著名上。当时，PCL和它的胫骨的附件是容易温和的。在推迟的盒子中，打印机控制语言外设释放是必要的克服系带收回并且为最佳的减小并且多骨的愈合使破裂床清醒。最后，一或二个可被细菌破坏的螺丝钉被用来修理avulsed骨头片断和30°屈曲膝灰浆在创伤被关上以后，演员组固定定期被使用。评估包括了X光检查，以后下垂符号和以后的抽屉与相反地侧面的方面相比测试。因为伴随物损害，对低手足的功能的评价不是可得到的。结果：在PCL的胫骨的附件avulsed损害的修理使用的gastrocnemius的Theposteromedial途径能提供清楚的解剖暴露的利益，很少血损失(20ml平均)，对任何结构的分开或附件的没有需要。病人被跟随在上面为一般水准上的11个月(从6个月到2年)。它证明多骨的愈合在推迟的损害的情况下在新鲜损害和7-9星期的情况下在4-6星期以内被完成。六从8fresh盒子出现了完全否定以后下垂符号或以后的抽屉测试但是为1-2公里的2有的额外的松弛。在3个推迟的盒子中，为3-4公里的额外的松弛与thecontralateral膝相比被介绍。结论；gastrocnemius的pos

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简介：ThepurposeofthispaperistoverifytheSmulyanlemmaforthesupportfunction,andalsotheGateauxdifferentiabilityofthesupportfunctionisstudiedonitsdomain.Moreover,weprovideacharacterizationofFrechetdifferentiabilityofthesupportfunctionontheextremalpoints.

简介：Toacceleratethetrainingofsupportvectordomaindescription(SVDD),confidencesupportvectordomaindescription(CSVDD)isproposedbasedontheobservationthatthedescriptionboundaryisdeterminedbyasmallsubsetoftrainingdatacalledsupportvectors.Namely,thenumberoftrainingsamplesintheuserdefinedsphereiscalculatedandtakenastheconfidencemeasure,accordingtowhichthetrainingsamplesarerankedinascendingorder.ThoseformerrankedonesareselectedastheboundarytargetsfortheSVDDtraining.SimulationsonUCIdatademonstratetheeffectivenessandsuperiorityofCSVDD:thenumberoftrainingtargetsandthetrainingtimearereducedwithoutanylossofaccuracy.

简介：ＦｅｅｄｂａｃｋＭｅｃｈａｎｉｓｍｉｎＤｅｃｉｓｉｏｎＳｕｐｐｏｒｔＳｙｔｅｍｓTXＦｅｄｂａｃｋＭｅｃｈａｎｉｓｍｉｎＤｅｃｉｓｉｏｎＳｕｐｐｏｒｔＳｙｓｔｅｍｓＳｕｎＺｈａｎｓｈａｎＩｎｓｔｉｔｕｔｅｏｆＳＥ．ＤａｌｉａｎＭａｒｉｔｉｍｅＵｎｉｖｅ...