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Understanding Your Treatment Options

Navigation (Computer-Assisted Surgery) for Hip Replacement

A Giant Step Forward in Joint Replacement

Computer-assisted surgery is a giant step forward in joint replacement. Advanced computer-assisted surgical monitoring with the Stryker Navigation System helps your surgeon more precisely align your hip or knee implant with computer imaging. The Stryker Navigation System gives your surgeon 3-D imaging of your leg during surgery which may result in more exact placement of the implants.

While the medical and computer science behind the Stryker Navigation System is extremely complex, the system is relatively easy for your surgeon to use. Minimally invasive wireless "trackers" send data about your joint movement to the system's computer. It presents your surgeon with multiple views of your body and allows the review of your leg's range of motion with the implant installed in its final position. Armed with this information, the surgeon can make adjustments within a fraction of a degree, helping to ensure the best outcome.

Similar to "global positioning systems," the Stryker Computer-Assisted "navigator" helps the surgeon align and orient the hip implant with more precision than ever before. The surgeon is able to view an interactive display of the lines, angles, and measurements needed to position your hip implant. This combination of computers with wireless cameras and infrared technology is significantly improving medical technology for orthopaedic surgery.

Find an Orthopaedic Doctor Search for Orthopedic Doctors in your area. Receive the names and addresses of Orthopedic Doctors who have used or are familiar with Stryker products.

How does computer navigation work?

• In the operating room infrared optics and tracking software continually monitor the position and mechanical alignment of the joint replacement components relative to your specific anatomy.
• Minimally invasive smart wireless instruments send data about to the joint movements (kinematics) to a computer.
• The computer analyzes and displays the kinematic data on the screen in the form of charts and graphs.
• These images provide your surgeon with the angles, lines, and measurement needed to best align your hip or knee implant.

• It allows your surgeon to make adjustments to within a fraction of a degree, helping to ensure optimal "fit" for your joint..
• It provides your surgeon with a comprehensive view of your joint mechanics.
• It helps your surgeon correctly position your joint in situations where it is otherwise difficult to get a good view of your anatomy.
• It may lead to improved stability for your joint and optimal range of motion for you.*

* Widmer KH, Grutzner PA. Joint replacement total hip replacement with CT-based navigation. Injury. 2004 Jun; 35 Suppl 1:S-A8-9