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The precise placement of knee implants is one of the most important factors in ensuring that they last as long as possible. If a knee implant is placed even a few degrees off of its optimal position, it will not last as long as one that is ideally aligned. Computer-assisted surgery (CAS) is a new approach that ensures knee implants are inserted in the best possible position – usually within two degrees or two millimeters. During computer-assisted surgery, a special instrument outlines the knee and an infrared camera attached to a computer picks up signals from this instrument and develops a model of the knee. This image is projected onto a monitor and allows the surgeon to determine the correct fit for the implant before actually making an incision. CAS gives the surgeon precise information about your unique anatomy, ensuring
that your implant is placed in the optimal position for your body. In addition,
CAS can eliminate the traditional practice of inserting a rod into the thigh bone
– a practice performed to determine alignment of the implant.
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