简介：Thescopeofinterventionalcardiologyhasrapidlyexpandedoverthelastseveraldecades.Inafieldwhereproceduraltreatmentoptionsforavarietyofcomplexcardiovascularconditionshavegrownexponentially,theimportanceofproceduralsafetycontinuestocometotheforefront.Thisismostevidentinthemovementtowardradialaccessastheinitialapproachforoperatorsinthecardiaccatheterizationlaboratory.Astheevidencegrowsforthesuperiorityofradialaccessoverfemoralaccesswithregardtoreducingbleedingeventsandimprovingclinicaloutcomes,wediscussthemodernapproachtoobtainingaccess,andhighlightbestpractices.

简介：Thispaperpresentsthedevelopmentofthebloodflowsimulationintwodimensionsovertherealgeometryofthefemoralartery.TheNavier-Stokesequationsaresolvedusingthefiniteelementmethod,toobtainthedistributionsofthebloodpressureandflowvelocityinmultipleinstantsoftimeanddifferentplacesofthefemoralarteryandthusdeterminethecurrentconditionofthebloodvessels.Thevelocityfieldshowsalaminarbehavior,where,thevelocityishigherinthecenterofthearteryanddecreasesasthebloodflowapproachesarterywalls.Inspiteofallarteryandbloodflowpropertiesnotbeingconsidered,thevaluesofpressureandvelocityobtainedarewithinthenormalranges.Finallythemodelisusedtoverifyifthereexistirregularitiesinthebloodflowinbothhealthysubjectsandsickpatients.

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简介：大腿骨的髁的孤立的花冠破裂在成年人是稀罕的并且Hoffa骨折不属于工会被报导仅仅在文学的一些时间。我们分析了六个案例在三年的一个时期上的Hoffa破裂不属于工会。三个病人保存地被对待，三个病人有固定失败。表示的延期是到一年的2个月。治疗协议与膝arthrolysis一起由开的减小，pseudoarthrosis的切除，骨头grafting和内部固定组成了。联合在平均数16星期在所有病人被完成。治疗Hoffa破裂不属于工会要求小心的外科手术前的计划和过细的外科的技术。关于在破裂管理和外科的技术的争吵的文学被考察。

简介：Objective:tostudytheclinicalinfluenceoffemoralqualityoncementlesshipreplacementandtoevaluatecorticalindex(CI)forfemoralqualityinordertoguideprosthesischoiceandrehabilitation.Methods:forth-ninecasesofcementlesshipreplacementwerefollowedupforaverage3.5years,42ofwhonhadX-rayfilmsonpreoperationoroperationday.Results:Harrisscoresandpatients'satisfactionwerelowbutpainwassignificantandprolongedwhencorticalindiceswerelow.Conclusions:CIisareliablesemi-quantityparameterforclinicalevaluationoffemoralquality.Osteoporosispatientspredisposetothighpain.Lagforfull-weightloadingandavoidancefortorsionmotioncancontributetolesspainwhenCI≤2.2.

简介：客观：为了在臀部以后学习大腿骨的新潮的修复术的压力分发，连接代替。方法：在新潮的联合代替以后，腿节和修复术什么时候完美地被认为柱体同样同心与banded接口，模仿界面的压力转移的一个相对完美的理论模型被建立。结果：最大值界面砍应力发生在Z=0。在大腿骨的颈的剖面图，界面砍应力随Z的增加指数地减少了。砍应力在Z0.1m变得很小，它意味着在大腿骨的新潮的修复术的远目的shear压力是很小的。为了避免压力集中和大腿骨的新潮的修复术，下沉、界面的应力必须在Z=0仍然保持与压力负担不变、平衡。大腿骨的新潮的修复术的半径随着变化了界面砍应力。半径的最大的价值发生在Z=0，然后，它在m减少了。特殊，在Z=10公里的a=18.2公里，在Z=98公里的a=5.36公里，这些是理想的半径。结论：模仿界面的压力的一个理论模型被证实腿节和修复术是否被认为柱体同样同心。分布界面砍并且有轴的位置的光线的压力被获得。为修复术的设计的一本理论参考书被提供。

简介：与ipsilateral联系的臀部的创伤的以后的脱臼代替了大腿骨的颈骨折是稀罕损害。而且，如此的病人的管理唤起考虑主要代替或保存大腿骨的头的强壮的看法。我们与如此的损害介绍了年轻成年人的一个盒子。他被操作在之上与大腿骨的颈的脱臼和固定的减小，在cancellous的帮助下的骨折拧紧。二年以后，破裂联合起来，病人是无征状的。我们进一步为如此的破裂建议了损害的机制并且在发展中的世界的变化损伤情形讨论了管理。

简介：From1990to2000,weusedHanssonpin,AOhollow-pullingscrew,andbendablescrewtotreat150casesoffreshfemoralneckfractureandtheresultwasanalysedtocomparetheefficacyofthethreemethodsofinternalfixation.

简介：Developingtheradiographicimagesfromtwotothree-dimensional,finiteelementanalysis(FEA)technologycansetupthemodel,predictingdiagnosis,treatmentdesign,aswellassurgicalplan.FEAprovidesanaccuratethree-dimensionalfiniteelementbiomechanicalstudyinosteonecrosisoffemoralhead(ONFH).Thepapersinthelatest5yearsrelatedtofemoralheadosteonecrosisandfiniteelementanalysisapplicationareconcentratedon.Wesummarizethelatestresearchprogressandproblems,includingtheappliedresearchcarriedoutinthefemoralheadosteonecrosisclinicalcases,innovationalskills,soastopointoutthedirectionoffutureresearchinFEA.

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简介：AbstractPurpose:Treatment of irreducible femoral intertrochanteric fractures often requires open reduction. However, the technique unavoidably causes patients to suffer greater trauma. As such, minimally invasive techniques should be employed to reduce the surgical-related trauma on these patients and maintain a stable reduction of the fractures. Herein, a minimally invasive wire introducer was designed and used for the treatment of femoral intertrochanteric fractures. The effectiveness of using a wire-guided device to treat irreducible femoral intertrochanteric fractures was evaluated.Methods:Between 2013 and 2018, patients with femoral intertrochanteric fractures who were initially treated by intramedullary nail fixation but had difficult reduction using the traction beds were retrospectively reviewed. Decision for an additional surgery was based on the displacement of the fracture. The patients were then divided into two groups: those in the control group received an open reduction surgery while those in the observation group received a closed reduction surgery using a minimally invasive wire introducer to guide the wire that could assist in fracture reduction. The operation time, blood loss, visual analogue scale scores, angulation, reduction, neck-shaft angle, re-displacement, limb length discrepancy, and union time were then recorded and analyzed to determine the efficiency of the wire introducer technique. Categorical variables were analyzed by using Chi-square test, while continuous variables by independent t-test and the Mann-Whitney test accordingly.Results:There were 92 patients included in this study: 61 in the control group and 31 in the observation group. There were no significant differences in baseline demographic factors between the two groups. All surgeries were successful with no deaths within the perioperative period. The average follow-up time for the patients was 23.8 months. However, the observation group had a significantly shorter operation time, lower visual analogue scale score, less intraoperative bleeding, and shorter fracture healing time. There were no significant differences in the angulation, reduction, neck-shaft angle, and limb length discrepancy between the two groups.Conclusion:The minimally invasive wire guide achieved a similar effect to that of open reduction in the treatment of intertrochanteric fractures with difficult reduction. Moreover, the minimally invasive wire introducer is a good technology that accurately guides the wire during reduction. Indeed, it is an effective technique and achieves good clinical outcomes in restoration of irreducible femoral intertrochanteric fractures.

简介：与ipsilateral联系的Hoffa骨折大腿骨的柄骨折是很稀罕的。损害的这种稀罕类型的三个盒子回顾地被考察。大腿骨的柄破裂和Hoffa破裂的地点被记录。所有大腿骨的柄破裂与内部固定被管理。为Hoffa破裂的错误诊断的率被记录。影响的膝的功能在二年后续为特殊外科(HSS)分数根据修改医院被评估。大腿骨的破裂在所有三个盒子中横向或合成。IpsilateralHoffa破裂在一种情况中在二种情况，和侧面的髁中发生在中间的髁。一仅仅Hoffa破裂外科手术前地被识别。所有大腿骨的柄破裂太平无事地愈合了。在其Hoffa骨折正确地被诊断的病人，修改HSS分数是94。在另一个病人，其Hoffa断裂，被第二个手术对待，修改HSS分数是93。并且在第三个盒子中，为Hoffa破裂拒绝了另外的操作，修改HSS分数仅仅是70。决定性地大腿骨的柄骨折能与ipsilateralHoffa骨折被联系，特别在摩托车事故。这类损害是很稀罕的，错误诊断是普通的。

简介：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.

简介：目的将在骨折和创伤的大脑损害(TBI)的设置以内观察浆液和胼胝leptin表示。64只男SD老鼠全部的方法A同等地被使随机化进4个组：nonoperated组，TBI组，破裂组，和fracture+TBI组织。老鼠在fracture+TBI以后在2，4，8和12个星期被牺牲。浆液leptin用放射性免疫测定被检测，并且胼胝形成放射学地被测量。胼胝leptin被immunohistochemistry分析。在破裂组，TBI组和联合fracture+TBI组的结果浆液leptin层次都显著地在2星期时间点与控制组相比被增加(P<0。05)。在联合fracture+TBI组的浆液leptin在在损害以后的4和8个星期在破裂和TBI组比那显著地高(P<0。05)。在fracture+TBI胼胝和胼胝体积的leptin积极的房间的百分比比在破裂唯一的组的那些显著地高(P<0。01)。我们在一只老鼠特别在开始的8个星期内在愈合的骨头以内表明了提高的leptin表示的结论骨折和TBI当模特儿。一个靠近的协会在破裂在leptin层次和胼胝形成的度之间存在。

简介：这研究试图调查trabecular的地区性的变化，以及决定在trabecular之间的关系词法参数和大腿骨的头的机械参数词法、机械的参数。从有折断的近似腿节的病人的七个大腿骨的头用一个micro-CT系统被扫描。每个大腿骨的头根据trabecular取向被划分成12个分区。一\(125\，\hbox{公里}^{3}\)trabecular立方的模型从每个分区被重建。81个trabecular模型的一个总数被重建，除了从在外科期间的二个大腿骨的头的三个破坏分区。Trabecular词法参数，即trabecular分离(Tb.Sp)，trabecular厚度(Tb.Th)，特定的骨头表面(BS/BV)，骨头体积部分(BV/TV)，结构的模型索引(SMI)，和anisotropy(DA)的度被测量。微有限的元素分析被执行让每个立方体获得明显的幼仔模量，织物水平von协定在1%下面强调分发沿着三个直角的方向的压缩紧张分别地。结果在词法参数揭示了重要地区性的变化(\(P)。沿着trabecular取向的幼仔moduli比沿着另外的二个方向的那些显著地高。一般来说，trabecular在中间的区域的机械性质是比在侧面的区域的那些低的。沿着trabecular取向的Trabecular机械参数显著地与BS/BV，BV/TV，Tb.Th，和DA被相关。在这研究，在有近似腿节骨折的病人的大腿骨的头的微结构特征和机械性质的地区性的变化彻底地在组织水平被调查。这研究的结果将帮助阐明为减少破裂风险和发展中的治疗策略为的大腿骨的头骨折的机制老。

简介：客观：由经皮的解压缩和自体同源的骨头marrowmononuclear房间(BMC)评估大腿骨的头的处理ofosteonecrosis的临床的功效和安全注入。方法；在有在早舞台的脉管的坏死的28个病人的44个臀部由解压缩由自体同源的BMCsinfusion跟随了的经皮的多重洞被对待。自体同源的BMC从从病人的以后的肠骨的冠被拿的骨头髓被集中。病人们在至少2年上面被跟随。结果被变化在radiograghic阶段在哈里斯臀部分数和前进决定。结果：Nocomplications在操作以后被观察。在操作前，有在8个臀部，在15个臀部的阶段Ⅱ，在14个臀部的阶段Ⅲ，在7个臀部的阶段Ⅳ，和在最近的后续的手术后的阶段的大腿骨的头坏死的阶段Ⅰ是在1个臀部的阶段O，在6个臀部的阶段Ⅰ，在13个臀部的阶段Ⅱ，在13个臀部的阶段Ⅲ，在7个臀部的阶段Ⅳ，在4个臀部的阶段Ⅴ。吝啬的preoperativeHarris臀部分数是58(46-89)，并且改善了到86(70-94)手术后地。外科手术前地折叠的所有大腿骨的头证明坏死的尺寸是至少超过30%。结论:与自体同源的BMC相结合的经皮的多重洞解压缩是对待大腿骨的头的脉管的坏死的一个新方法。越早阶段，越更好结果。Arandomized未来的学习需要以后与平淡的核心解压缩作比较。

简介：Objective:Toevaluatetheoutcomeoftotalhiparthroplasty(THA)withcementlesscupsandfemoralheadautograftsforpatientswithhipdysplasiaandosteoarthritis.Methods:Between1995and2002,weimplanted23cementlesscupsandfemoralheadautograftsin20patientswithhipdysplasiaandosteoarthritis.Inthisstudy,aretrospectivestudywasmadeon21hipsin20patients(18femalesand2males,aged50yearsonanaverage)withdevelopmentalhipdysplasiatreatedbyTHAwithacementlesscupandfemoralheadautograft.Theacetabularcupwasplacedatthelevelofthetrueacetabuinmandallthepatientsrequiredautogenousfemoralheadgraftsduetoacetabulardeficiency.Theaveragerateoftheacetabularcupcoveredbythefemoralheadautograftwas31%(rangingfrom10%to45%).Eighthipshadlessthan25%cupcoverageandthirteenbetween25%and50%.Theaveragefollow-upperiodwas4.7years(range,1-8years).ThereplacingoutcomewasevaluatedbymodifiedHarrishipscore.Preoperativeandfollow-upradiographsweremade.Results:Alltheautograftswereunitedtothehostbones.Noautograftwascollapsedornocomponentfromthehipwasloosedinallthepatients.AccordingtothemodifiedHarrishipscore,theaveragehipscoreincreasedfrom46beforeoperationto89atthefinalreview.Beforeoperation,theleg-lengthdiscrepancywasgreaterthan2cminallthepatientsexceptonewithbilateralhipdysplasia.Afteroperation,only2outof20patientshadaleg-lengthdiscrepancygreaterthan1cm.Threehipsshowedminorboneresorptioninthelateralportionofthegraft,whichdidnotsupportthecup.ThreehipsdevelopedGrade1BrookerheterotopicossificationandonedevelopedGrade2.Conclusions:THAwithacementlesscupandafemoralheadautograftforpatientswithosteoarthritisresultedfromhipdysplasiacanresultinfavorableoutcomes.Thismethodcanprovidereliableacetabularfixationandrestoretheacetabularbonestockinpatientswithdevelopmentalhipdysplasiawhenthe

简介：ObjectiveToevaluatereliabilityandsafetyofAngio-sealhemostasisdeviceappliedtothefemoralarterialpuncturesiteafterpercutaneouscoronaryintervention(PCI).MethodsIn40patientsafterPCIinourinstituteduringtheperiodbetweenMay2002andDecember2003,Angio-sealdevicewereusedtosealthefemoralarterialpuncturesite.ResultsAlltheAngiosealdevicesweresuccessfullydeployedin40patients(successfulrate;100%);themeantimetohemostasiswas45±12sec;themeantimetoambulateafterangiosealclosurewas1.9?.5hours.Nomajorgroinandsystemiccomplicationwasobserved.Therewasminorgroinoozingin2casesandsmallhemotomain1patient.ConclusionsAngio-sealclosuredeviceofthefemoralarterypuncturesiteafterapercutaneouscoronaryprocedureissafe.Itcanshortenthetimetohemostasis,leadstoearlymobilization,andreducegroincomplication.Thedisadvantageisrelativelyexpensive.