RATKA: Robotic-assisted Total Knee Arthroplasty vs. Conventional One
Study Details
Study Description
Brief Summary
This study compares and evaluates differences in movement analysis, patient-reported outcome and radiological assesment between patients undergoing robotic-assisted total knee arthroplasty and conventional one.
| Condition or Disease | Intervention/Treatment | Phase |
|---|---|---|
|
N/A |
Detailed Description
Osteoarthritis causes the joints to become painful and stiff. Osteoarthritis of the knee is a common condition that is expected to be a lot more frequent in the next two decades. As a consequence, an increase of total knee replacement surgery is predicted. Total knee replacement surgery is offered when knee pain and stiffness caused by osteoarthritis can no longer be managed and these symptoms significantly impact on an individual's normal activities of daily living. Most total knee replacements are successful but up to 34% of all patients have poor functional outcomes following surgery. This leaves affected people at a greater risk of reduced physical activity and thus impacts longer-term general health. Poor outcomes are therefore of importance to patients and have a considerable financial and service-provision impact on National Health Service (NHS) care. While patient-related characteristics and their relationship to patient outcomes have been identified, few studies have been undertaken to determine how kinematic outcomes (how the prosthetic knee moves) are related to functional outcome and patient satisfaction. The kinematic outcome of a total knee replacement is hypothesised to relate to both the structural design (shape) of the implant and the surgical procedure itself. In recent years, there has been development of high technology tools to help surgeon restoring proper joint biomechanics. Nowadays on the market there are several robots designed to fulfill this function. To date, no studies have investigated the kinematic outcomes of robotic-assisted total knee arthroplasty in comparison to conventional surgery. Whilst it is known that long term success of total knee replacement depends largely upon correct alignment of the prosthesis components during surgery, no studies have looked at the anatomical alignments of the osteoarthritic knee prior to undergoing surgery (using Computerised Tomography (CT) scanning). The aim of the study is to examine relationships between movement analysis (kinematic and functional outcomes), patient reported outcome measures (PROMS) and CT measurement, both pre- and post-operatively, between robotic-assisted total knee arthroplasty and conventional surgery.
Study Design
Arms and Interventions
| Arm | Intervention/Treatment |
|---|---|
| Active Comparator: Robotic-assisted total knee arthroplasty Patients undergoing robotic-assisted total knee arthroplasty with use of Journey II BCS implants |
Procedure: Total knee arthroplasty
Participant will undergo robotic-assisted or conventional total knee arthroplasty
Diagnostic Test: Conputer tomography scan
CT scans of the affected knee joint before and after the surgical procedure
Diagnostic Test: biomechanical assesment
Participants will be asked to perform biomechanical assesment before and following surgery at baseline, 6-8 weeks and 6-months postoperatively
|
| Active Comparator: Conventional total knee arthroplasty Patients undergoing conventional total knee arthroplasty with use of Journey II BCS implants |
Procedure: Total knee arthroplasty
Participant will undergo robotic-assisted or conventional total knee arthroplasty
Diagnostic Test: Conputer tomography scan
CT scans of the affected knee joint before and after the surgical procedure
Diagnostic Test: biomechanical assesment
Participants will be asked to perform biomechanical assesment before and following surgery at baseline, 6-8 weeks and 6-months postoperatively
|
Outcome Measures
Primary Outcome Measures
- Changes in patients reported outcome measures - Oxford Knee Score (OKS) [[Time Frame: baseline (preoperatively) and 6-months postoperatively]]
To explore differences between outcome in patients treated with RATKA and conventional total knee arthroplasty. Results range from 0 to 48, with higher scores corresponding to better outcomes.
Secondary Outcome Measures
- Changes in patients reported outcome measures - Oxford Knee Score (OKS) [[Time Frame: 1 week and 6-8 weeks post-operatively]]
To explore differences between outcome in patients treated with RATKA and conventional total knee arthroplasty. Results range from 0 to 48, with higher scores corresponding to better outcomes.
- Changes in patients reported outcomes - Oxford Knee Score Activity & Participation Questionnaire (OKS_APQ) [Time Frame: 1 week, 6-8 weeks and 6 months post- operatively]
To explore differences in higher levels of activity and social participation
- Changes in patients reported outcomes - Forgotten Joint Score (FJS) [Time Frame: 6-8 weeks and 6 months post-operatively]
To explore differences in patient's ability to forget about a joint as a result of successful treatment. Results range from 0 to 100, with higher scores corresponding to better outcomes.
- Changes in patients reported outcomes - UCLA (University of California) score [Time Frame: 6-8 weeks and 6 months post-operatively]
To explore differences in patient's physical activity. Results range from 0 to 10, with higher scores corresponding to better outcomes.
- Changes in knee range of motion [Time Frame: preoperatively, 6-8 weeks and 6 months post-operatively]
To explore differences in range of motion (flexion and extension)
- Changes in pain medication [Time Frame: 1 week, 6-8 weeks and 6 months post-operatively]
To asses evolution of post-operative knee pain
- arthroplasty related complications [Time Frame: 1 week, 6-8 weeks and 6 months post-operatively]
To count and asses all complications that may occur during surgery and in postoperative period
- arthroplasty revision surgeries [Time Frame: 1 week, 6-8 weeks and 6 months post-operatively]
To count and asses the reason of all revision surgeries that may occur during postoperative period
- walking abilities [Time Frame: 6-8 weeks and 6 months post-operatively]
To asses "up and go" time
- Length of hospital stay [Time Frame: from baseline to discharge from hospital ranging averagely from 1 up to 7 days postoperatively]
To measure number of days counting from surgery to the discharge
- Biomechanical 3D motion and emg walking outcomes [Time Frame: at baseline, 6-8 weeks and 6 months post-operatively]
Overground walking is measured using 3D Motion analysis and electromyography (EMG)
- Radiological outcome on CT scans [Time Frame: at baseline preoperatively and 6-months postoperatively]
Rotational alignment of the total knee component is assessed by measuring the femoral antetorsion, Alignment of the total knee component is assessed by measuring the tibial tubercle-trochlear groove distance (TT-TG)
- 6- minute walking abilities [Time Frame: 6-8 weeks and 6 months post-operatively]
to asses pace and model of 6-minute walk
- Biomechanical stair climbing outcomes [Time Frame: at baseline, 6-8 weeks and 6 months post-operatively]
Stair climbing and descending is measured using 3D Motion analysis and EMG
- Biomechanical static balance outcomes [Time Frame: at baseline, 6-8 weeks and 6 months post-operatively]
Static balance is measured using a force plate
- Biomechanical dynamic balance outcomes [Time Frame: at baseline, 6-8 weeks and 6 months post-operatively]
Dynamic balance is measured using a force plate and the modified Star Excursion Balance Test (mSEBT)
- Leg muscle strength outcomes [Time Frame: at baseline, 6-8 weeks and 6 months post-operatively]
Leg muscle strength measured using maximal voluntary isometric contraction (MVIC) test of the hamstring and quadriceps muscles on both limbs.
Eligibility Criteria
Criteria
Inclusion Criteria:
-
Listed for a primary total knee replacement (TKR)
-
Indication for the TKR is primary osteoarthritis of the knee joint involving one or more compartments
-
Aged 18 or over
-
Patient willing to provide full informed consent to the trial
Exclusion Criteria:
-
Listed for a single-stage one-sided TKR procedure
-
Severe symptoms in the contralateral knee so as to require staged bilateral knee replacements within 6 months of the primary procedure
-
Fixed flexion deformity of 15 degrees or greater who will require excessive resection of the distal femur
-
Clinically assessed uncorrectable varus/valgus deformity of 15 degrees or greater
-
Any co-morbidity which, in the opinion of the investigator, is severe enough to present an unacceptable risk to the patient's safety
-
Inflammatory arthritis
-
Previous septic arthritis in the affected knee joint
-
Previous surgery to the collateral ligaments of the affected knee
-
A contralateral total knee replacement that has been implanted less than one year from the date of consultation
-
A contralateral total knee replacement that is severely painful
-
Patients on warfarin or novel oral anticoagulants (NOACs)
-
Will not be resident in the catchment area for at least 6 months post-surgery
-
Undertaking the surgery as a private patient
-
Patients who, in the opinion of the clinical staff, do not have capacity to consent
-
Patients who are pregnant
-
Unable to understand written and spoken Polish
Contacts and Locations
Locations
| Site | City | State | Country | Postal Code | |
|---|---|---|---|---|---|
| 1 | Department of Othopedics and Rehabilitation, Medical University of Warsaw | Warsaw | Mazovia | Poland | 04-749 |
Sponsors and Collaborators
- Medical University of Warsaw
Investigators
- Principal Investigator: Bartosz M. Maciąg, MD, Medical University of Warsaw
Study Documents (Full-Text)
None provided.More Information
Publications
None provided.- WarsawMU/RATKA