vanguard tibial bearings · the uhmwpe handbook: ultra high molecular weight polyethylene in total...
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Cruciate Retaining
• 3°posteriorslope• 15°internal/externalrotation
Cruciate Retaining Lipped
• Enhancedposteriorlip• 15°internal/externalrotation
Vanguard® CompleteKneeSystem CruciateRetaining
Knees • Hips • Extremit ies • Cement and Accessories • PMI® • Technology
References 1.Beading,L.DirectMoldedComponentsShowntoResistOxidation.
Orthopedics Today.17(4):1997.
2.Furman,B.et al.(Abstract)EffectofResinTypeandManufacturingMethod on UHMWPE Oxidation and Quality at Long Aging andImplantTimes.43rdAnnualMeetingOrthopaedicResearchSociety,SanFrancisco,CA,February9–13,1997.
3.Beading, L. Polyethylene-Related Failure: A Challenge to TKA.Orthopedics Today.16–21,1996.
4.Ritter, M. et al. Long-Term Survival Analysis of a PosteriorCruciate-Retaining TotalCondylar Total KneeArthroplasty.Clinical Orthopaedics and Related Research.309:136–145,1994.
5.DataonfileatBiomet.Benchtestresultsnotnecessarilyindicativeofclinicalperformance.
6.Kurtz, S. et al. The UHMWPE Handbook: Ultra High Molecular Weight Polyethylene in Total Joint Replacement. ElsevierAcademicPress.SanDiego,CA.2004.
7.Parks, N. et al. Modular Tibial Insert Micromotion. Clinical Orthopaedics and Related Research.356:10–15,1998.
8.Sosa, M. et al. Micromotion Between the Tibial Tray and thePolyethylene Insert. Fifth World Biomaterial Congress. TorontoCanada,May29–June2,1996.
9. Incavo,S.et al.TibialPlateauCoverageinTotalKneeArthroplasty.Clinical Orthopaedics and Related Research.299:81–85,1994.
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Vanguard®TibialBearingsVanguard®TibialBearingsareavailableinArCom®DirectCompressionMolded(DCM)polyethyleneandE1™AntioxidantInfusedTechnology.ArCom®polyethyleneisclinicallyproventoberesistanttowear,delaminationandoxidation.1–4
E1™AntioxidantInfusedBearings,foundedonArCom®heritage,areinfusedwithvitaminE,anaturalantioxidant.E1™technologydefinesanewclassoftibialbearingsandovercomesthelimitationsofremeltedandannealedpolyethylenesbyunitingtrueoxidativestability,highmechanicalstrengthandultralowwear.5,6
Anterior Stabilized
• Prominent10mmanteriorlip• 5mmposteriorlip• 6°internal/externalrotation
DCMUHMWPE
Volu
met
ric
Wea
r R
ate
(mm
3 /M
C)
Volumetric Wear Rates of Largest Cruciate Retaining (CR)
Tibial Bearing Profile1
Tested at Biomet Biomaterials Laboratory
86% CR wear reduction
over Direct Compression
Molded
E1™ Material
0
10
20
30
40
50
43.4
6.1
0–15°
The Vanguard® Complete Knee System
providesforpersonalizedpatientcareby
allowing a custom-fit of the femoral, tibial
and patellar components independently,
thus addressing the largest possible
percentageofthepopulation.
Vanguard® CompleteKneeSystemCruciateRetaining
Softened Anterior Flange
Streamlineddesigntohelpavoidincidenceof“retinaculartenting”
Deep Trochlear Groove
Reducespatellarforcesthroughoutrangeofmotion
Proportional Posterior Condyles
Allowsforoptimalcontactareaindeepflexion
Wide Proximal Trochlear Groove
Providesexcellentpatellartrackingregardlessofpatient’sQ-angle*
Optimized Tibiofemoral Articulation
Increasedcontactareainhighflexionandaxialrotation
Extended Trochlear Groove
Allowsthepatellatomaintainfullcontactwiththefemoralcomponentindeepflexion
AdditionalFeaturesofthe Vanguard®CRDesign:• 10femoralcomponentsthatgrowanterior/posterioronaverage
by2.4mmincrements
• Fullyinterchangeabletibial/femoralsizing
• 1:1tibial/femoralcoronalcongruency
• PPS®PorousPlasmaSprayCoatingforcementlessorInterlok®finishforcementedapplications
Interchangeable Bearing Options
CR,CRLippedandASbearingscanbeutilizedwiththeCRfemur
Rotated Bearing Surface Articulation
Increasescontactareaby13percent1
Proven Compressive Locking Mechanism
Clinicallyproventominimizemicromotionandbacksidewear5
Tibial Tray Design
Symmetrictibialtrayavailableinninesizesforoptimaltibialcoverage6
Biomet®TibialTrayTheVanguard®CompleteKneeSystemfeaturesasymmetricaltibialtraydesignforoptimalcoverage,ArCom®andE1™TibialBearingsforprovenwearresistance1–4andaprovenlockingmechanismshowntobe“themoststableoverall.”7,8Biomet®tibialtraysareavailablewithInterlok®finishforcementedapplicationsorRegenerex®PorousTitaniumConstructtoenhancebonefixationincementlessapplications.
Raised Anterior Lip
Providesenhancedfemoralrotationalstabilityandcontrolsanteriorfemoralslide
Patellar Tendon Relief
Facilitatesincreasedrangeofmotion
*within0–15°ofQ-angle
Removable Lugs
Formodularaugmentation
Independent Augments
CRcomponentcanacceptposteriorordistalfemoralaugments