The system is described as "bi-cruciate stabilized" because unlike conventional knee systems, this design provides functions for both the anterior cruciate ligament (ACL) and posterior cruciate ligament (PCL). These ligaments provide stability and support for the knee, but are frequently removed during knee replacement surgery. The surgical technique is similar to other knee procedures, and the JOURNEY system's newly designed instruments allow for both minimally invasive surgery (MIS) and computer assisted surgery (CAS).
To replicate normal knee function, Smith & Nephew conducted in-depth analyses of natural knee kinematics and the inherent limitations in knee replacement systems. The JOURNEY knee system offers more sizing options for better fit and minimal bone resections. Smaller sizing choices that are more amenable to female anatomy make the JOURNEY system the obvious choice to achieve the best fit for all patients. Surgeons believe the JOURNEY knee will offer patients a more natural feeling knee implant and greater satisfaction.
"Smith & Nephew has utilized new technologies to better understand normal knee kinetics and the relationship between these forces and the articular shapes of the knee", stated Dr. Michael D. Ries, vice chairman of the Department of Orthopaedic Surgery at the University of California, San Francisco Medical Center. "The JOURNEY Knee System is well suited for high demand, or active patients."
"The JOURNEY knee system is a significant addition to Smith & Nephew's outstanding knee product line", stated Scott Flora, president of Smith & Nephew Reconstructive Division. "The JOURNEY system is the only knee replacement on the market that offers patients more natural movement and function, and provides surgeons with an answer to the challenges of current total knee systems."
OXINIUM material is a unique and advanced bearing product technology created through a proprietary manufacturing process that transforms the surface to a ceramic, resulting in a material that incorporates the best features of ceramic and metal while avoiding the limitations associated with either material. OXINIUM material is a revolutionary technology used in the production of components of knee and hip implants that exhibits superior performance characteristics due to its hardness, low-friction and resistance to roughening and abrasion.
The concept of using oxidized zirconium as a joint replacement material was developed by the many individuals within Smith & Nephew Orthopaedic's Research, Development, and Manufacturing groups. OXINIUM technology has been modelled on the highly successful GENESIS II knee system, which itself has been utilized in excess of 500.000 surgeries worldwide. The first oxidized zirconium component was implanted in 1995. Since then, over 100.000 hip and knee components have been implanted with remarkable success.
Smith & Nephew is a global medical technology business, specializing in Orthopaedic Reconstruction, Orthopaedic Trauma & Clinical Therapies, Endoscopy and Advanced Wound Management products. Smith & Nephew is a global expert in arthroscopy and advanced wound management and is one of the fastest growing global orthopaedics companies.
Smith & Nephew is dedicated to helping improve people's lives. The company prides itself on the strength of its relationships with its surgeons and professional health care customers, with whom its name is synonymous with high standards of performance, innovation and trust. The company has over 8500 employees and operates in 33 countries around the world generating annual sales of $2,6 billion. More company news is available in the VMW September 2005 article Smith & Nephew's computer-assisted surgery system to allow precise knee implants.