1. Computer Assisted Knee Replacement Surgery

2. Anatomy of Knee The knee is made up of three bones The knee is made up of three bones Femur (thigh bone) Femur (thigh bone) Tibia (lower leg bone) Tibia (lower leg bone) Patella (knee cap) Patella (knee cap)

3. Causes of Knee Arthritis Wear and tear Wear and tear Fractures, torn cartilage and torn ligaments Fractures, torn cartilage and torn ligaments

4. Symptoms of Arthritis Pain – –During activity – –At rest or sleeping Swelling and tightness Bone spurs Grinding sound during movement Stiffness and decreased range of motion

5. What potential benefits can knee replacement provide? A return to mobility A return to mobility Reduce or eliminate pain Reduce or eliminate pain

6. When may knee replacement surgery be right for you? Experience significant pain Experience significant pain Knee function and mobility decreases Knee function and mobility decreases Physician recommends joint replacement Physician recommends joint replacement

7. Traditional Knee Replacement Surgery Non-computer-assisted Surgical treatment through knee replacement of advanced knee osteoarthritis and other diseases Surgical treatment through knee replacement of advanced knee osteoarthritis and other diseases About 300,000 people undergo knee replacement in the U.S. annually 1 About 300,000 people undergo knee replacement in the U.S. annually 1 1. National Institutes of Health, www.nih.gov/news/pr/dec2003/od-10a.htm

8. Surgical Procedure Arthritic surfaces at the end of the tibia and femur are removed Arthritic surfaces at the end of the tibia and femur are removed Bones are prepared for new covering Bones are prepared for new covering Femoral and tibial components are attached Femoral and tibial components are attached Patella is resurfaced Patella is resurfaced

9. What is computer-assisted surgery? A new approach to knee replacement A new approach to knee replacement The patient’s anatomy is simulated and displayed on a computer The patient’s anatomy is simulated and displayed on a computer Computer provides infor-mation about where to place the components Computer provides infor-mation about where to place the components

10. How does the Ci ™ System work? Camera searches for arrays placed on the patient via infrared signals. Computer calculates the best position to place the components for accurate alignment Patient’s anatomical information is entered into the computer through a process called registration. Information is fed back to the camera and communicated to the computer

11. Potential Benefits Guides surgeon in areas that are difficult to visualize. Guides surgeon in areas that are difficult to visualize. Relays specific measurements not previously available to surgeons. Relays specific measurements not previously available to surgeons. Gives precise, accurate data on the patient’s own anatomy. Gives precise, accurate data on the patient’s own anatomy. Allows surgeons to make informed decisions about precise implant placement based on detailed data from the computer. Allows surgeons to make informed decisions about precise implant placement based on detailed data from the computer.

12. Why use computer-assisted knee replacement surgery? Advanced knee replacement technology combined with widely used, clinically successful implants. Advanced knee replacement technology combined with widely used, clinically successful implants. Allows surgeons to be more precise when making decisions about placing knee components. Allows surgeons to be more precise when making decisions about placing knee components. Provides the surgeon with extensive information to assist with surgical decisions. Provides the surgeon with extensive information to assist with surgical decisions.

13. What potential complications can knee replacement have? Loosening, deformation or wear of one or more of the components, osteolysis, infection, DVT and fracture of the components or bone. Loosening, deformation or wear of one or more of the components, osteolysis, infection, DVT and fracture of the components or bone. Note: This procedure is not for everyone. As with any surgery, there are risks. Recovery takes time and hard work. The life of a joint replacement depends on weight, activity level, age and other factors. Each patient responds differently. Note: This procedure is not for everyone. As with any surgery, there are risks. Recovery takes time and hard work. The life of a joint replacement depends on weight, activity level, age and other factors. Each patient responds differently.

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