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P.F.C.® 

SIGMA® TC3 Knee System

The SIGMA® Knee System design is the most constrained device available within the P.F.C.® SIGMA® Knee System and is indicated for use in cases where collateral ligaments are deficient. This comprehensive system offers both a fixed bearing and rotating platform option. Additionally surgeons are able to address bone and soft tissue defects with a variety of products including augments, wedges, stems, and metaphyseal sleeves. This system’s approach to revision knee surgery provides the surgeon with maximum intra-operative flexibility.

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The SIGMA® Knee System design is the most constrained device available within the P.F.C.® SIGMA® Knee System and is indicated for use in cases where collateral ligaments are deficient. This comprehensive system offers both a fixed bearing and rotating platform option. Additionally surgeons are able to address bone and soft tissue defects with a variety of products including augments, wedges, stems, and metaphyseal sleeves. This system’s approach to revision knee surgery provides the surgeon with maximum int

Features & Benefits


  • Unique Tibial Bearing Options

    Allows for either rotating platform or fixed bearing tibial constructs. Providing rotating platform in the revision constraint (varus valgus constraint) level.


  • Common MBT Revision Tibial Base Used Across Constraint Levels

    Intra-operative flexibility. Address an array of patient needs. OR efficiency with common tibial base and preparation as used in higher constrained implant options. Allows for bearing rotation that reduces torsional stresses on tibial base1


  • Metaphyseal Sleeves for Tibia and Femur

    Modular porous sleeves accommodate Engh Type II bone defects. Provide rotational stability. Compressively load the bone according to Wolff’s Law. Intra-operative flexibility. Restores varying patient anatomies.


  • Streamlined Instrumentation

    Intra-operative flexibility. Restores varying patient anatomies. Intra-operative flexibility. Common instrumentation if need to increase levels of constraint. Addresses an array of patient needs.

  • SIGMA TC3 KNEE - LOGO

       

       

Supporting Documentation

Resources

Stemless Revision TKA Utilizing Metaphyseal Press-Fit Sleeves

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Knee Revision Portfolio

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References

1. Bottlang, M. et al. “A Mobile-bearing Knee Prosthesis Can Reduce Strain at the Proximal Tibia.” Clinical Orthopaedics and Related Research, 447 June 2006: 105-111.

Indication for Use

Total knee arthroplasty is intended to provide increased patient mobility and reduced pain by replacing the damaged knee joint articulation in patients where there is evidence of sufficient sound bone to seat and support the components. TKA is indicated for: a severely painful and/or severely disabled joint resulting from osteoarthritis, post-traumatic arthritis, rheumatoid arthritis, or a failed previous implant.

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