New Knee = A Leg Up For Patients -- In Depth Doctor's Interview | Medical News and Health Information

Reported April 22, 2011

New Knee = A Leg Up For Patients -- In Depth Doctor's Interview

Research Summary
WHAT YOU DON’T KNOW ABOUT YOUR KNEE: The knee is the largest joint in the body. Normal knee function is required to perform most everyday activities. The knee is made up of the lower end of the thighbone (femur), which rotates on the upper end of the shin bone (tibia), and the kneecap (patella), which slides in a groove on the end of the femur. Large ligaments attach to the femur and tibia to provide stability. The long thigh muscles give the knee strength.

DO YOU NEED A NEW KNEE? Most patients who undergo total knee replacement are age 60 to 80, but orthopedic surgeons evaluate patients individually. Recommendations for surgery are based on a patient's pain and disability, not age. Total knee replacements have been performed successfully at all ages, from the young teenager with juvenile arthritis to the elderly patient with degenerative arthritis.

NEW KNEES: THE SOLUTION: Based on in-vitro wear simulation testing, the LEGION Primary Knee System with VERILAST technology is expected to provide wear performance sufficient for 30 years of actual use under typical conditions. The results of in-vitro wear simulation testing have not been proven to quantitatively predict clinical wear performance. Also, a reduction in total polyethylene wear volume or wear rate alone may not result in an improved clinical outcome as wear particle size and morphology are also critical factors in the evaluation of the potential for wear mediated osteolysis and associated aseptic implant loosening.

NEW KNEES: THE TECHNOLOGY: Previously, new knees were made from a top portion of cobalt chrome, and a lower portion of plastic. While this combination is proven to function well, normal activities force the coarse surface of the cobalt to wear-down the plastic – which results in a shorter lifespan of the knee. New technology allows for a smoother metal alloy (Oxinium) to be used instead of cobalt chrome – which decreases basic wear-and-tear, and increases the lifespan of the knee.

SURGICAL COMPLICATIONS: The complication rate following total knee replacement is low. Serious complications, such as a knee joint infection, occur in fewer than 2 percent of patients. Major medical complications such as heart attack or stroke occur even less frequently. Chronic illnesses may increase the potential for complications. Although uncommon, when these complications occur, they can prolong or limit full recovery. Blood clots in the leg veins are the most common complication of knee replacement surgery. Your orthopedic surgeon will outline a prevention program, which may include periodic elevation of your legs, lower leg exercises to increase circulation, support stockings, and medication to thin your blood. MORE (see below)

FOR MORE INFORMATION, PLEASE CONTACT:

Smith & Nephew Verilast Technology
(866) 867-6040
http://rediscoveryourgo.com

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New Knee = A Leg Up For Patients -- In Depth Doctor's Interview | Medical News and Health Information