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Computer-Assisted Knee Replacement Surgery

Computer-Assisted Knee Replacement Surgery. 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. Addressing Implant Alignment.

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Computer-Assisted Knee Replacement Surgery

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  1. Computer-Assisted Knee Replacement Surgery

  2. 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.

  3. Addressing Implant Alignment

  4. Malpositioning can potentially lead to… • Early loosening • Increased poly wear • Poor function

  5. Computer-assisted surgery can assist the surgeon in providing proper implant alignment, even through small incisions

  6. What is computer-assisted surgery? • A new approach to knee replacement. • The patient’s specific anatomy is simulated and displayed on a computer during surgery. • Computer provides information about where to place components for proper alignment.

  7. CAS – Common names • Computer-assisted Surgery (CAS) • Image Guided Surgery (IGS) • Computer-assisted Orthopaedic Surgery (CAOS) • Computer Navigation

  8. Types of CAS • Passive vs. Active Systems • Use of wires or infrared to communicate to the computer • Open vs. Closed Systems • Whether a system’s 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

  9. 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.

  10. 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. 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. 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.

  12. Benefits • Guides surgeon in areas that are difficult to visualize. • Relays specific measurements not previously available to surgeons. • Gives precise, accurate data on the patient’s 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.

  13. Thank You

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