Computer Assisted Knee Replacement Surgery

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Computer Assisted Knee Replacement Surgery
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Anatomy of Knee

• The knee is made up of three bones
• Femur (thigh bone)
• Tibia (lower leg bone)
• Patella (knee cap)

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Causes of Knee Arthritis

• Wear and tear
• Fractures, torn cartilage and torn ligaments

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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

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What potential benefits can knee replacement
provide?

• A return to mobility
• Reduce or eliminate pain

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When may knee replacementsurgery be right for
you?

• Experience significant pain
• Knee function and mobility decreases
• Physician recommends joint replacement

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Traditional Knee Replacement SurgeryNon-computer
-assisted

• Surgical treatment through knee replacement of
  advanced knee osteoarthritis and other diseases
• About 300,000 people undergo knee replacement in
  the U.S. annually1
• 1. National Institutes of Health,
  www.nih.gov/news/pr/dec2003/od-10a.htm

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Surgical Procedure

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

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What is computer-assisted surgery?

• A new approach to knee replacement
• The patients anatomy is simulated and displayed
  on a computer
• Computer provides infor-mation about where to
  place the components

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

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

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Why use computer-assisted knee replacement
surgery?

• Advanced knee replacement technology combined
  with widely used, clinically successful implants.
• Allows surgeons to be more precise when making
  decisions about placing knee components.
• Provides the surgeon with extensive information
  to assist with surgical decisions.

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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.
• 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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• Thank You