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About this product

Division: Knee Reconstruction
Category: Revision Knees

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.

The SIGMA® TC3 System design is the most constrained device available within the P.F.C.® SIGMA® Knee System
 

Indications 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.

Features & Benefits

Features Benefits
Unique tibial bearing options
  • Allows for either rotating platform or fixed bearing tibial constructs
  • Only company to provide 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
  • Common instrumentation if need to increase levels of constraint
  • Addresses an array of patient needs

 

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.

DSUS/JRC/0216/1397f 11/2016

All medical devices have associated risks. Please refer to the package insert and other labeling for a complete list of indications, contraindications, precautions and warnings. For further information on DePuy Synthes Products, please contact your local DePuy Synthes Representative.
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