The Flex Fixed Knee is specifically designed to safely accommodate up to 155 degrees of flexion in patients who had this ability before surgery. This means that with appropriate rehabilitation a patient can resume an active lifestyle after total knee replacement – deeply bending the knee for recreational, religious and other day-to-day activities. Patients today want to continue their previous lifestyles – even after total knee replacement. The Flex Fixed Knee may be an option for many patients to help them achieve this goal.
The knee is the hinge joint consisting of three bones. The upper part of the hinge is at the end of the upper leg bone (femur), and the lower part of the hinge is at the top of the lower leg bone (tibia). When the knee is bent, the end of the femur rolls and slides on top of the tibia. A third bone, the kneecap (patella), glides over the front and end of the femur.
The damaged bone surfaces and cartilage are then removed by the surgeon. Precision instruments and guides are used to help make sure the cuts are made at the correct angles so the bones will align properly after the new surfaces (implants) are attached. Small amounts of the bone surface are removed from the front, end and back of the femur. This shapes the bone so the implants will fit properly. The amount of bone that is removed depends on the amount of bone that has been damaged by the osteoarthritis. A small portion of the top surface of the tibia is also removed, making the end of the bone flat. The back surface of the patella (kneecap) is also removed.
Special knee implants are now available in India. These allow the knee to function more naturally by providing more flexion or bending. This satisfies Indian, and South Asian requirements of kneeling for prayer, sitting cross legged on the ground for meals or social purposes. Muslims in particular need this to offer prayers. Japanese customs also require high knee flexion
Knee implants have been functioning very well for men and women, but we want to meet women’s unique needs by making knee replacements that feel, fit and function even better,” says Rosenberg. “The implant is the best of both worlds. It’s based on the current implant we use, a highly successful implant with great mechanics and 10 years of clinical success. Only the shape of this new implant is different, to make it feel more natural.
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