Computer Assisted Knee Replacement Surgery

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Computer Assisted Knee Replacement Surgery

• By (insert surgeon name)

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Knee Replacement Surgery

• Arthritic surfaces on 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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Addressing Implant Alignment
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Malpositioning can lead to

• Early loosening
• Increased poly wear
• Poor function

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Computer assisted surgery can assist the surgeon
in providing proper implant alignment, even
through small incisions
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What is computer-assisted surgery?

• A new approach to knee replacement
• The patients specific anatomy is simulated and
  displayed on a computer during surgery
• Computer provides information about where to
  place components for proper alignment

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CAS Common names

• Computer Assisted Surgery (CAS)
• Image Guided Surgery (IGS)
• Computer Assisted Orthopaedic Surgery (CAOS)
• Computer Navigation

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Types of CAS

• Passive vs. Active Systems
• Use of wires or infrared to communicate to the
  computer
• Open vs. Closed Systems
• Whether a systems software can be used with
  multiple manufacturers implants (open) or those
  of one manufacturer (closed)
• Image vs. Imageless Systems
• Use or non-use of CT scans or fluoroscopy to
  register patient anatomy

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Ci System

• DePuy Orthopaedics computer-assisted surgery
  system, powered by a leading computer-assisted
  surgery company
• Passive and image-free
• Hardware and software are unique to DePuy for use
  with clinically proven implants.
• Optional instrumentation, designed specifically
  for use with the Ci System, gives surgeons
  fine-tune precision and reduces the traditional
  number of surgical steps required

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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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Why are surgeons using the Ci System?

• Assists with new techniques, such as smaller
  incisions, that reduce visualization
• Assists with intraoperative decision making
  during technically demanding procedures
• Enables better precision and accuracy
• Addresses patient demand for the latest technology

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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
  specific anatomy not a standard patient
  anatomy
• Fine-tuning instruments allow surgeons to make
  adjustments within 1 mm and 1 degree of accuracy,
  guided by on-screen imaging

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Thank You