LinkSymphoKnee

For Interesting Patient cases please visit our LinkSymphoKnee Website: www.linksymphoknee.com

The LinkSymphoKnee is a complete system for primary total knee replacement to revision solutions.

Based on decades of experience, Waldemar Link created a comprehensive knee system that covers all aspects of modern total knee arthroplasty from cruciate retaining, posterior stabilized to stemmed revision variants with high-end user-friendly instrumentation.

Implant Sizes:

14 femoral sizes
10 tibial sizes
2up-2down compatibility between femoral and tibial components

Instrumentation System

State-of-the-art, streamlined design
Enables efficent surgical workflow
Highly adjustable to user needs

Material Options

LINK PorEx surfaces:
- Reduce metal ion release
- Enhance tribological properties
Poly components (articular surfaces and patella):
- UHMWPE
- E-dur Polyethylene (highly cross-linked PE with antioxidant vitamin E)

Versatile Modular System for intraoperative flexibility

The LinkSymphoKnee system is a fixed bearing system with different constraint levels, such as cruciate ligament conserving (CR), cruciate ligament replacing (PS and PS+) and revision options (CCK). The modularity between the components provides a high intraoperative flexibility. All components are available as LINK PorEx versions.

Femoral Components

4,5° anteriorer Flansch
Flacher Patellaflansch
Sanft abnehmender Beugungsradius
Abgestufte Tiefe der Trochlearinne
Harmonischer Übergang zwischen den Größen (3 mm a.p.)

Knochenerhaltende Kastengeometrie
Dorsaler Kontakt bei 60º-Beugung
Hohe Position des PS-Zapfens
SpheroGrip Makrogefüge für eine homogene Knochen-Zement-Implantat-Kontaktfläche und gleichmäßige Krafteinleitung in den Zementmantel³

Weichteilschonender anteriorer Flansch
Breite proximale Trochlea
Lateralisierte Trochlearrinne
Anatomische Nutgeometrie

Soft Tissue Friendly Anterior Flange
Wide Proximal Trochlea
Lateralized Trochlear Groove
Anatomical Notch Geometry

Bone Conserving Box Geometry
Post Engagement at 60° Flexion
High PS Cam Location
SpheroGrip Macrostructure Provides for a Homogeneous Bone Cement-Implant Interface and Uniform Force Transmission in the Cement Mantle³

4.5° Anterior Flange
Low Profile Patella Flange
Gently Decreasing Flexion Radius
Graduated Trochlear Groove Depth
Harmonic Growth between Sizes (3mm in A/P)

Articulating Surfaces

Um 5º geneigter Zapfen zur Erhöhung der Stabilität
Posterior Schrägschnitt zur Reduzierung von Impingement
0º posteriore Neigung
Posteriore und mittige Schwalbenschwanz-Verriegelung

Sprunghöhe PS/PS+: 17 mm
PS: Uneingeschränkte Rotationsfreiheit
PS+: Einschränkung 3° IE und VV
Anteriore Aussparung zur Umhüllung des Patellabands
Mit Vitamin E versetztes E-Dur Polyethylen¹

1. Tolerantes anteriores Profil

2. 3º posteriore Neigung

3. Posteriore und mittige Schwalbenschwanz-Verriegelung

4. Mit Vitamin E versetztes E-Dur Polyethylen¹

1. Dualer Krümmungsradius für eine optimierte Kinematik

2. Aussparung für starke Beugung des Patellabands

3. Flacherer mediolateraler Rand an hinterer Facette für Kompatibilität mit variabler Femurposition

1. Dual Radius of Curvature Designed to Optimize Kinematics

2. High Flex Recess for Patellar Ligament

3. Flatter Mediolateral Edge at Posterior Facet for Up Down Femoral Compatibility

1. Forgiving Anterior Profile

2. 3º Posterior Slope

3. Posterior and Central Dovetail Locking Feature

4. E-Dur Vitamin E Infused Polyethylene¹

PS/PS+ Jump Height = 17mm
PS Constraint Free to Rotate
PS+ Constraint Constrained 3º IE and VV
Anterior Recess For Patella Ligament Wrapping
E-Dur Vitamin E Infused Polyethylene¹

5º Sloped Post Increases Stability
Posterior Chamfer Designed to Reduce Impingement
0º Posterior Slope
Posterior and Central Dovetail Locking Feature

Tibial Components

1. Robuste mittige und dorsale Schwalbenschwanz-Verriegelung

2. Antirotationssteg zur Führung der Plateauimplantation

3. Abgeflachte ventrale Lippe zur Reduzierung des Plateaueinsetzwinkels

4. Kiel und Rippe zum Schutz vor Rotationskräften

1. Robust Central and Posterior Dovetail Locking Detail

2. Antirotation Island Guides Bearing Implantation

3. Flattened Anterior Lip Designed To Reduce Bearing Insertion Angle

4. Keel and Fin Designed to Protect Against Rotational Forces

Additonal Implants

Femoral and Tibial Augments

Modularschaft-Optionen

Kompatibel mit LINK FlexiCones

Das LinkSymphoKnee System ist mit den TrabecuLink FlexiCones von LINK kompatibel.

Femur- und Tibia-Augmente

Modular Stems Options

Compatible with LINK FlexiCones

The LinkSymphoKnee system is compatible with LINK’s TrabecuLink FlexiCones.

Read less

LinkSymphoKnee - Primary

LinkSymphoKnee - Revision

Offset stem handling

Instruments highlights

Perseus smart cutting guide

Insert Inlay

How does the LinkSymphoKnee system aim to replicate the native knee kinematics?

Graduell abnehmende Flexionsradius (J-Kurve) zur Reduzierung der Instabilität bei mittlerer Beugung
Sanfter Übergang in der sagittalen Krümmung
Höhere Kongruenz in Extension
Dorsaler Kontakt von PS Post- und Cam-Mechanismus bei 60º-Beugung
PS Post- und Cam-Mechanismus zur Begrenzung der posterioren Translation der Tibia und Unterstützung des femoralen Rollbacks
Konkaves Cam-Design zur Vergrößerung des Oberflächenkontakts zwischen Cam und Post und Reduzierung von Druckspitzen

The gradually decreasing flexion radius (J-curve) reduces mid-flexion instability
Smooth transition in sagittal curvature
Higher congruency in extension
PS Post and Cam mechanism engagement at 60° flexion
PS Post and Cam mechanism limits posterior tibia translation and facilitates femoral rollback
Concave Cam design increases surface contact between Cam and Post and reduces pressure peaks.

How do the sizes of the LinkSymphoKnee Femoral Components grow?

Homogenes Wachstum von 3 mm in anteriorer Richtung zwischen den Größen
Weiterhin konstanter hinterer Bereich bei allen posterioren Referenzsystemen

Homogenous growth of 3 mm from size to size size in anterior direction.
Posterior aspect constant as usual in all posterior referencing systems

How many degrees of anterior flange angle does the LinkSymphoKnee feature?

Winkel des anterioren Patellaflansches von 4,5°

The anterior Patella Flange angle amounts to 4,5°

What is the thickness of the distal and posterior condyles of the LSK Femoral Components?

Die einheitliche Stärke aller Femurkomponenten beträgt 9 mm
Zur Beurteilung des Streck- und Beugespalts wird ein Spacer-Block benötigt.

The thickness is constant and amounts to 9 mm in all Femoral Components
One spacer block is required to assess the extension and flexion gap.

CR, PS & PSplus - Surgical Technique

15 MB Download

CCK - Surgical Technique

Related products

All products

Sources

Crosslinking w/ a 75 kGy gamma radiation dose in air then EtO sterilized.
E. Oral, „Characterization of Irradiated Blends of Alpha-tocopherol and UHMWPE“, Biomaterials 2005; 26(33):6657-6663.
E. Oral, „Highly Crosslinked UHMWPE Doped with Vitamin E“, in UHMWPE Biomaterials Handbook, S. M. Kurtz, Ed., Burlington, MA Academic Press 2009.
S. M. Kurtz, „Vitamin-E-Blended UHMWPE Biomaterials“, in UHMWPE Biomaterials Handbook, S. M. Kurtz, Ed., Burlington, MA Academic Press 2009.
S. M. Kurtz, „Trace Concentration of Vitamin E Protect Radiation Crosslinked UHMWPE from Oxidative Degradation“, J Biomed Mater Res A 2008; 549-563
S. M. Kurtz, „The Origins and Adaptations of UHMWPE for Knee Replacement“, in UHMWPE Biomaterials Handbook, S. M. Kurtz, Ed., Burlington, MA Academic Press 2009.
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E. M. Brach del Prever, „UHMWPE for Arthroplasty: Past or Future?“, J Orthopaed Traumatol 2009; 10:1-8
Bader R., Bergschmidt P., Fritsche A., Thomas P., Mittelmeier W. Alternative Werkstoffe und Lösungen in der Knieendoprothetik für Patienten mit Metallallergie. Orthopäde 2008; 37:136-142
Wear Performance of Sequentially Cross-Linked Polyethylene Inserts against Ion-Treated CoCr, TiNbN-Coated CoCr and Al2O3 Ceramic Femoral Heads for Total Hip Replacement