The first study goal is to compare the outcomes between Posterior Stabilized and Bicruciate Retaining TKA. Additionally, the second goal is to evaluate the effect of robot assisted surgery in both Posterior Stabilized and Bicruciate Retaining TKA.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
DOUBLE
Enrollment
47
A total knee arthroplasty will be performed with a bicruciate retaining implant (Journey II, XR). The control group will consist out of patients receiving a posterior stabilized implant (Journey II, BCS).
A total knee arthroplasty will be performed with robot-assistance (NAVIO).
A total knee arthroplasty will be performed with a bicruciate retaining implant (Journey II, XR). The control group will consist out of patients receiving a posterior stabilized implant (Journey II, BCS).
Ghent University Hospital
Ghent, Belgium
Patient reported outcome measures
The following patient reported outcome measures will be evaluated: Knee Injury and Osteoarthritis outcome score. The score is a percentage score from 0 to 100, 0 representing extreme problems and 100 representing no problems.
Time frame: Preoperative
Patient reported outcome measures
The following patient reported outcome measures will be evaluated: Knee Society Score. The score is a percentage score from 0 to 100, 0 representing extreme problems and 100 representing no problems.
Time frame: Preoperative
Patient reported outcome measures
The following patient reported outcome measures will be evaluated: EuroQoL. The score is a percentage score from 0 to 100, 0 representing extreme problems and 100 representing no problems.
Time frame: Preoperative
Patient reported outcome measures
The following patient reported outcome measures will be evaluated: Pain Catastrophizing Scale. The score is a percentage score from 0 to 52, 0 representing no problems and 52 representing extreme problems.
Time frame: Preoperative
Change in patient reported outcome measures
The change for the following patient reported outcome measures will be evaluated (compared to preoperatively): Forgotten Joint Score. The score is a percentage score from 0 to 100, 0 representing extreme problems and 100 representing no problems.
Time frame: Postoperatively at 6 weeks, 6 months, 1 year and 2 years.
Change in patient reported outcome measures
The change for the following patient reported outcome measures will be evaluated (compared to preoperatively): Knee Injury and Osteoarthritis outcome score. The score is a percentage score from 0 to 100, 0 representing extreme problems and 100 representing no problems.
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Time frame: Postoperatively at 6 weeks, 6 months, 1 year and 2 years.
Change in patient reported outcome measures
The change for the following patient reported outcome measures will be evaluated (compared to preoperatively): Knee Society Score. The score is a percentage score from 0 to 100, 0 representing extreme problems and 100 representing no problems.
Time frame: Postoperatively at 6 weeks, 6 months, 1 year and 2 years.
Change in patient reported outcome measures
The change for the following patient reported outcome measures will be evaluated (compared to preoperatively): EuroQoL. The score is a percentage score from 0 to 100, 0 representing extreme problems and 100 representing no problems.
Time frame: Postoperatively at 6 weeks, 6 months, 1 year and 2 years.
Change in patient reported outcome measures
The change for the following patient reported outcome measures will be evaluated (compared to preoperatively): Pain Catastrophizing Scale. The score is a percentage score from 0 to 52, 0 representing no problems and 100 representing extreme problems.
Time frame: Postoperatively at 6 weeks, 6 months, 1 year and 2 years.
Alignment
Coronal alignment on xrays. The lateral distal femoral angle (LDFA) will be evaluated. This is the angle between the mechanical femoral axis and the line between the distal articular surface of the femur. Additionally the medial proximal tibial angle (MPTA) will be evaluated. This is the line between the condylar surface and the mechanical axis of the tibia on a coronal radiograph.
Time frame: Preoperative and postoperatively at 6 weeks and 6 months.
Knee laxity
Coronal knee laxity will be evaluated with stress examination. Coronal stress will be evaluated with a stress radiograph. The deviation between the neutral position and position under stress will be measured on a coronal radiograph. The angle between the joint lines will be measured on the coronal radiograph.
Time frame: Preoperative and postoperatively at 1 year.
Knee laxity
Sagittal knee laxity will be evaluated with stress examination. Sagittal knee laxity will be measured with an AP laxitymeter (GENOUROB; CE Marked). With a standardized setup, anteroposterior laxity can be obtained by measuring the anteroposterior deviation from the neutral position with up to 300N of force.
Time frame: Preoperative and postoperatively at 1 year.
Knee kinematics in 3D after squat, knee flexion/extension, stair ascend and descend.
Knee kinematics in 3D obtained with fluoroscopy. Patients will be asked to perform squats, a flexion/extension movement, ascend and descend stairs. 3D motion of the prosthesis components can be obtained by projecting the 3D file of the prosthesis components onto the fluoroscopy images.
Time frame: Postoperatively at 1 year.