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Physician Insight:
Overview of the procedure

Featuring the Sigma® TC3 RP System & Metaphyseal Sleeve Fixation


Dr. Russ Nevins will perform a revision total knee replacement using the Sigma® TC3 RP and M.B.T. Revision Tray system from DePuy Orthopaedics, Inc.  The broadcast will be moderated by Dr. William Barrett (Renton, WA).  This broadcast will take place from Spring Valley Hospital Medical Center in Las Vegas, NV.  

At 4PM Pacific (7PM EST), Dr. Nevins will perform the revision total knee replacement surgery featuring the Sigma TC3 RP, a rotating platform knee implant design.   This system helps diffuse loosening forces from the increased mechanical constraint typical in revision implant systems and offers surgeons enhanced fixation options through the use of metaphyseal sleeves on the femoral and tibial side.  

About Revision Knee Replacement
Currently there are over 50,000 revision total knee surgeries performed every year in the United States.1 Although there are a variety of reasons that a primary knee replacement ultimately fails, the most common causes are for infection, instability, and loosening of the tibial/femoral implants.2   During a revision knee surgery, it is important to consider an implant system that is able to address these complex surgical issues.  The DePuy Sigma TC3 Revision incorporates rotating platform technology that features an insert that is free to rotate about a central post.  This motion decouples the torsional forces between the tibial insert and the tibial tray.  In published studies, a mobile bearing construct has been shown to decrease loosening forces by 68-73%.3
As with any medical treatment, individual results may vary. Only an orthopaedic surgeon can determine whether an orthopaedic implant is an appropriate course of treatment. There are potential risks, and recovery takes time. The performance of the new joint depends on weight, activity level, age and other factors.

About DePuy Orthopaedics, Inc.
DePuy Orthopaedics, Inc., a Johnson & Johnson company, is one of the world’s leading orthopaedic companies and offers a rich history of innovation in knee replacement and a long history of clinical success in total knee replacement.  DePuy is advancing the standard of orthopaedic patient care, with a focused commitment to help surgeons achieve excellence in their surgical practice. The company designs, manufactures and distributes orthopaedic devices and supplies including hip, knee, extremity, trauma, cement, orthobiologics, and operating room products.

References:
1. U.S. Market for Large Joint Reconstructive Implants, Millennium Research Report. Published March 2009.
2. J. Suarez, W. Griffin, B. Springer, T. Fehring, J.B. Mason and S. Odum. J Arthroplasty 2008 No 23:pp. 317–321.
3. Bottlang, M, et al., “A Mobile-bearing Knee Prosthesis Can Reduce Strain at the Proximal Tibia”    Clinical Orthopaedics and Related Research. No. 447, June 2006: 105-111.

Participants

Featuring:

Russ Nevins

Russ Nevins, MD

Chairman of Desert Valley Rehab and Associate Adjunct Professor at Touro University School of Medicine

William Barrett

William Barrett, MD

Medical Director, Valley Medical Center, Renton, WA