Kinematic knee centre in navigation
Research type
Research Study
Full title
Validation of the OrthoPilot Lower Limb Model: The Accuracy of the Calculated Knee Centre in Computer Navigated Total Knee Replacement
IRAS ID
154145
Contact name
Frederic Picard
Contact email
Sponsor organisation
Golden Jubilee National Hospital
Research summary
Traditionally, the planning for the bony cuts to be made in total knee replacement surgery is made before the operation using X-rays of the patient’s leg. More recently computer navigated surgery software has been used during the operation to calculate details about the knee joint by moving the leg around and by identifying points on the bones of the leg to give information about the hip, knee and ankle centres and the axes that join them together. This allows the computer to make a model of the leg and provide the surgeon with information about where to make bony cuts.
One of the points calculated by the computer software is the centre of the knee. There are many different ways of defining the knee centre. One of these is used in the software. This software is CE marked and widely used. It has good clinical outcomes. However there has not been a study to look at the relationship of the calculated knee centre used with the actual patient anatomy. This research will involve looking at CT scans of patients who have undergone a total knee replacement using computer navigated surgery. By locating the points calculated by the computer on the CT scan of the knee replacement the relationship between the computer software's calculated knee centre and the anatomy will be determined. This will allow confirmation that the calculated knee centre that is used in the software is satisfactory.
REC name
London - Queen Square Research Ethics Committee
REC reference
14/LO/1160
Date of REC Opinion
24 Jun 2014
REC opinion
Favourable Opinion