AGC V2 Knee System

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AGC V2 Knee System
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Introduction

• was introduced in 1983
• proven to be one of the most successful and
  popular range of implants for primary TKA
• 98 survivorship at 15 years
• several AGC studies have demonstrated these
  results
• AGC System offered several unique benefits
• deepend patella groove
• option of titanium porous coating
• full interchangability of femoral and tibial
  component sizes

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Design rationale

• based on the results of an anthropometric study
• established the range of femoral dimensions
  within a normal patient population
• data resulted in the development of the AGC range
  of femoral and tibial implants
• cover the full range of anatomical variation
• with a minimal number of components

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AGC V2

• retains many of the innovative features first
  introduced
• further enhacements have been made
• result of 10 years clinical experience

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Features

• new shaped tibial components for greater tibial
  bone coverage
• fully interchangeable posterior stabilized option
• easier anatomic instrumentation
• extra sizes tibial components for improved
  patient match
• additional 80mm Universal or Anatomic femoral
  component

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Features

• Many original features have been retained
• choice of Universal and Anatomic components
• choice of posterior cruciate ligament retaining
  or cruciate ligament sacrificing femoral
  components
• implants for cemented or non-cemented
  applications
• full interchangeability between femoral, tibial
  and patellar components
• metal backed tibial components with I-Beam stem
• moulded UHMWPE using ArCom manufacturing process
  to reduce wear
• dome shaped patella
• choice of either intramedullary and
  extramedullary instrumentation for both femur and
  tibia

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Clinical success

• over 97,5 rate at 7 years (Swedish Knee
  Arthroplasty Study)
• over 97 survival rate at 10 years of 3.000 knee
  arthroplasties (Dr. M. Ritter)
• over 96 survival rate at 6 years of 976 knee
  arthroplasties (Dr. R. Worland)
• over 90 survival rate at over 3 years (Dr. P-T.
  Nielsen)
• 97,5 survival rate at 6 years of 790 knee
  arthroplasties (Dr. M. Hämäläinen)

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Swedish Knee Arthroplasty

• AGC continues to be internationally recognized as
  one of the most successful knees available
• articulating surfaces have remained unchanged
• therefore clinical follow-up is not compromised
• largest independent survey is the Swedish Knee
  Arthroplasty Study, began in 1975
• criteria are complications and revisions
• largest series of TKA reported is the AGC
• 3.258 TKAs using the AGC were registered (1983 -
  1992)
• collected data revealed clinical survical rate of
  97,5

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Swedish Knee Arthroplasty
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Posterior Stabilisation

• AGC System offers a choice of femoral components
• PCL is retained
• PCL is absent
• achieved by using identical bone resections of
  the distal femur for both PCL and Posterior
  Stabilisation implant types
• decision of which to use can therefore be made
  during surgery

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Posterior Stabilisation

• unique design of femoral cam engages into the
  tibial groove
• full interchangeablity between all sizes of
  femoral and tibial components
• maximum bone coverage
• cam/groove engagement is closer to the resected
  tibial plateau
• cantilever forces reducing the risk of tibial
  loosening are minimised
• AGC PS has extensively been tested
• subluxation forces compare favourably with other
  systems currently available

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InterlokTM Surface

• roughened texture on the inner surface of the
  femoral compoenent and the underside of the
  tibial component
• provides stronger bond between implant and cement
• more than doubling the shear strength compared to
  smooth implant surfaces

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Plasma Spray Porous Coating

• only powder is heated to create the coating
  (unique)
• avoids excessive heating of the substrate
• hence any weakening of the substrate material
• pore size 100 - 1.000 micron range
• provides optimal conditions for implant fixation
  and bone ingrowth

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Plasma Spray Porous Coating

• best biocompatibility
• long term clinical results
• excellent immediate implant stability
• no implant fatigue strength
• sealed against wear/PE-debris.
• outstanding bone ingrowth

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• Thank you!!