Computer Guided/Computer Assisted Robotic Knee Surgery (CAS)

In computer-guided or computer-assisted robotic knee replacement surgery, special trackers are placed around the patient’s knee and signals are picked up by a sensor which then relays information to a computer which guides the bone cuts and other parts of the knee surgery. We currently reserve this technique for special cases in which conventional methods are not suitable for performing the knee replacement (eg. cases in which there is severe deformity above or below the knee or cases in which there was previous surgery with large amounts of metal hardware left around the knee).

knee surgery
knee surgery
knee surgery

Knee Surgery

Most recently, a new innovation in computer-guided (CAS) knee surgery has been introduced by Zimmer Inc (one of the largest orthopaedic implant companies in the world and Dr Lee is a consultant for them). It uses a wifi-enabled gyroscope tool and is called the iASSIST. The gyroscope technology is currently used in various “self-righting” applications (cell phones, video game controllers, etc.) and in the iASSIST, it potentially allows surgeons to position knee implants at the perfect angle and orientation.

knee surgery equipment

It consists of two main parts:

  1. The tool itself which contains the gyroscope and a wifi transmitter and
  2. An LED panel that receives and interprets the location of the tool.

The iASSIST represents a next step in surgical guidance, providing simple, intuitive and accurate intraoperative feedback and alignment validation to surgeons during joint replacement procedures, eliminating the need for bulky capital equipment. Current robotic and navigation systems use optical-tracking, requiring a clear line-of-sight into the surgical field, and rely upon complex additional equipment in the operating room, providing feedback on external computer screens.

Zimmer’s iASSIST technology comprises small electronic disposable pod components that are used at the site of knee replacement surgery, providing instantaneous, accurate alignment validation through a simple electronic display. The disposable pods are manipulated within the surgical field with positioning information provided by a series of internal accelerometers. iASSIST Knee does not require the use of pins or additional incisions and does not rely on external systems or stimulus.

 

FIND US AT

Mount Elizabeth Medical Centre
3 Mount Elizabeth #04-07
Singapore 228510
+65 6737 0558 (Office hours)
+65 9727 8528 (After office hours)
+65 6737 0680 (Back & Nerve, Scoliosis Office Hours)
+65 9771 8964 (Back & Nerve, Scoliosis After Office Hours)

Parkway East Medical Centre
319 Joo Chiat Place #03-05
Singapore 427989
+65 6247 7958 (Office hours)
+65 9125 8585 (After office hours)

Mount Elizabeth Novena Specialist Centre
38 Irrawaddy Road #04-26
Singapore 329563
+65 6734 0378 (Office hours)
+65 9088 3029 (After office hours)
GET IN TOUCH

DR KEVIN LEE
(Mount Elizabeth & Mount Elizabeth Novena)

Hip & Knee Replacements, Sports Injuries, Cartilage Repair
+65 6737 0558 (Office hours)
+65 9727 8528 (After office hours)

DR HEE HWAN TAK
(Mount Elizabeth)

Spine, Scoliosis, Neck & Nerve Problems
+65 6737 0680 (Office hours)
+65 9771 8964 (After office hours)

DR ANDY WEE
(Parkway East, Mount Elizabeth, Mount Elizabeth Novena)

Shoulder & Elbow, Sports Injuries, Arthroscopic Surgery Of The Hip & Knee
+65 6247 7958 (Office hours)
+65 9125 8585 (After office hours)

DR VICTOR SEAH
(Mount Elizabeth Novena & Parkway East)

Foot & Ankle, Trauma & Fractures
+65 6734 0378 (Office hours)
+65 9088 3029 (After office hours)

DR TAY GUAN TZU
(MOUNT ELIZABETH NOVENA)

PAEDIATRIC ORTHOPAEDICS, FOOT & ANKLE, MINIMALLY INVASIVE SURGERY, DEFORMITY CORRECTION WITH FRAMES
+65 6734 0378 (Office hours)
+65 8699 8811 (After office hours)
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Pinnacle Orthopaedic Group 2016