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It’s a jubilee for the knees…ConforMIS, Inc., manufacturer of minimally invasive medical devices for the treatment of osteoarthritis and joint damage, today announced the release of the first and only patient-specific bicompartmental knee resurfacing implant on the market. MI specialists, ConforMIS indicates that the iDuo™ is the third in the line of minimally invasive, patient-specific implants developed by the company for the treatment of osteoarthritis of the knee.
The iDuo, 510(k) cleared for marketing by the FDA, is a bicompartmental resurfacing implant designed for patients whose arthritic damage is limited to either the medial or lateral compartment of the knee, in addition to the patellofemoral compartment. ConforMIS designed the iDuo to resurface only the affected areas, and states that it preserves far more bone on both the femur and tibia than traditional knee replacement surgery. The iDuo also preserves both the anterior and posterior cruciate ligaments, helping to maintain natural knee kinematics. The extent of tissue preservation with the iDuo helps patients retain their future surgical options.
In the news release, Dr. Philipp Lang, CEO and Chairman of ConforMIS, stated, “The iDuo significantly advances the range of treatment options for patients who suffer from knee osteoarthritis. Traditionally, a patient with bicompartmental disease had total as the only option. For young and active patients, the iDuo provides a less invasive alternative that maintains their ability to move to a total knee in the future, if necessary.”
Customizations reigns here, where each iDuo is designed from an individual patient’s CT scan using the company’s proprietary iFit™ technology and made specifically for that patient. This personalization allows for individualized fit, including full coverage of the tibial cortical rim and a simplified surgical technique.
Detailing the inner workings of the product, Jong Lee, the company’s Senior Vice President of Marketing told OTW, “ConforMIS iFit™ Technology takes CT scan data and converts it into a virtual 3D representation of the patient’s knee. Our software maps the topography of the articular surface and establishes the biomechanical axis from the scan data. Based on this data, our design engineers work with the software to produce a bicompartmental femoral implant and a tibial implant designed for that unique anatomy.”
Commenting to OTW on surgeon interest in the product, Lee noted, “The iDuo has generated a lot of interest from surgeons who have focused on the uniqueness of the concept. It is one of only two bicompartmental implants available on the market, and the only one that takes advantage of patient-specific data to ensure optimal fit. The patient specific instrument set has also generated quite a lot of interest as a much more intuitive way to approach the technique for dealing with technically challenging partial knee procedures.”
In the news release, Dr. Tom Minas, Director of the Cartilage Repair Center at Brigham and Women’s Hospital in Boston and part of the surgeon design team for the iDuo, stated, “The move toward patient-specific approaches enables the possibility of a minimally invasive, bone preserving, resurfacing procedure that allow patients to avoid a traditional total knee replacement, particularly if they are young and active. As a surgeon, though, what has been especially intriguing for me is how much this approach has simplified and improved the surgical technique that can be employed for partial knee procedures.”
The company has packaged the iDuo with patient-specific instrumentation called iJigs™, which are designed from the same scans as the implant, including data on the patient’s biomechanical axis. The iJig cutting and placement guides eliminate manual sizing during surgery and provide tactile guidance to precisely place the instruments, simplifying the surgical technique. One tray of disposable iJigs replace multiple trays of traditional instrumentation that would typically have cost a hospital several hundred dollars per surgery in instrument handling, storage, sterilization, and lost operating room time.
Regarding the sales strategy, Lee told OTW, “We began a limited release of our partial knee resurfacing system, which includes the iUni™ and iDuo, to a small group of surgeons in the second half of 2007. With their help, we have really refined the instrumentation and approach to create what we think is one of the simplest and most reproducible surgical techniques available for a partial knee procedure. We introduced the iUni in March of this year with the benefit of that feedback and are now introducing the iDuo for broad release, fully incorporating all of the learnings we have gathered over the last year.”
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