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Osteo Arthritis KneeRATKANCT04611815

Robotic-assisted Total Knee Arthroplasty vs. Conventional One

A study testing Total knee arthroplasty, Computer tomography scan and biomechanical assesment in people with Osteo Arthritis Knee and Knee Arthritis, run by Medical University of Warsaw at 1 site in Poland.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial 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. Read more about this study

Who is it for?
Ages 18 years and older
What is being tested?
Total knee arthroplasty, Computer tomography scan and biomechanical assesment
Type of treatment
Surgery or procedure
Could I receive a placebo?
No, everyone receives an active treatment
How many people
200 participants
Where
1 sitePoland
Study dates
1 Dec 2020to 1 Aug 2022
Phase
Interventional
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 years and older
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • 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

Who cannot join

  • 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
Show all 16Show fewer
  • 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

Trial locations and contacts

1 site in 1 country.

Poland1 site
  • Department of Othopedics and Rehabilitation, Medical University of Warsaw

    Warsaw, Masovian Voivodeship, 04-749

Other trials in Poland

About this study

Official title: Does Robotic-assisted Total Knee Arthroplasty Improves Functional Outcome and Gait Pattern in Comparison to Conventional Total Knee Arthroplasty With Use of Bicruciate-stabilized (BS) Implant? Randmized-controlled Trial

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.

Read the 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) with use of the combination of either Oxford score or KOOS score with addition of WOMAC and Lysholm scores and CT measurement, both pre- and post-operatively, between robotic-assisted total knee arthroplasty and conventional surgery.

Being tested
Total knee arthroplasty, Computer tomography scan, biomechanical assesment

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Total knee arthroplastyProcedure or surgery

    Participant will undergo robotic-assisted or conventional total knee arthroplasty

  • Computer tomography scanDiagnostic test

    CT scans of the affected knee joint before and after the surgical procedure

  • biomechanical assesmentDiagnostic test

    Participants will be asked to perform biomechanical assesment before and following surgery at baseline, 6-8 weeks and 6-months postoperatively

Study groups in NCT04611815
Study groupRoleWhat they receive
Robotic-assisted total knee arthroplastyActive comparatorPatients undergoing robotic-assisted total knee arthroplasty with use of Journey II BCS implants
Receives: Procedure: Total knee arthroplasty; Diagnostic Test: Computer tomography scan; Diagnostic Test: biomechanical assesment
Conventional total knee arthroplastyActive comparatorPatients undergoing conventional total knee arthroplasty with use of Journey II BCS implants
Receives: Procedure: Total knee arthroplasty; Diagnostic Test: Computer tomography scan; Diagnostic Test: biomechanical assesment

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Changes in patients reported outcome measures - Oxford Knee Score (OKS)

    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.

    Measured: At baseline (preoperatively), 6-8 weeks and 12 months postoperatively.

  2. Changes in patients reported outcome measures - Knee injury and Osteoarthritis Outcome Score (KOOS)

    To explore differences between outcome in patients treated with RATKA and conventional total knee arthroplasty. Results range from 0 to 100, with higher scores corresponding to better outcomes.

    Measured: At baseline, 6-8 weeks post-operatively and 12 months post-operatively.

  3. Changes in patients reported outcome measures - Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC)

    To explore differences between outcome in patients treated with RATKA and conventional total knee arthroplasty. Results range from 0 to 96, with lower scores corresponding to better outcomes.

    Measured: At baseline, 6-8 weeks post-operatively and 12 months post-operatively.

  4. Changes in patients reported outcome measures - Lysholm knee scoring scale

    To explore differences between outcome in patients treated with RATKA and conventional total knee arthroplasty. Results range from 0 to 100, with higher scores corresponding to better outcomes.

    Measured: At baseline, 6-8 weeks post-operatively and 12 months post-operatively.

  5. Changes in patients range of motion (ROM)

    To explore differences between outcome in patients treated with RATKA and conventional total knee arthroplasty. Results range from 0 to 100, with higher scores corresponding to better outcomes.

    Measured: At baseline, 6-8 weeks post-operatively and 12 months post-operatively.

  6. *We take into consideration the possible use of other PROM questionnaires and analysis of different adverse events depending on the unpredictable circumstances.

    To explore differences between outcome in patients treated with RATKA and conventional total knee arthroplasty. Results range from 0 to 100, with higher scores corresponding to better outcomes.

    Measured: At baseline, 6-8 weeks post-operatively and 12 months post-operatively.

Secondary outcomes (17)
  1. Changes in patients reported outcome measures - Oxford Knee Score (OKS)

    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.

    Measured: [Time Frame: 1 week and 6-8 weeks post-operatively]

  2. Changes in patients reported outcomes - Oxford Knee Score Activity & Participation Questionnaire (OKS_APQ)

    To explore differences in higher levels of activity and social participation

    Measured: Time Frame: 1 week, 6-8 weeks and 6 months post- operatively

  3. Changes in patients reported outcomes - Forgotten Joint Score (FJS)

    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.

    Measured: Time Frame: 6-8 weeks and 6 months post-operatively

  4. Changes in patients reported outcomes - UCLA (University of California) score

    To explore differences in patient's physical activity. Results range from 0 to 10, with higher scores corresponding to better outcomes.

    Measured: Time Frame: 6-8 weeks and 12 months post-operatively

  5. Changes in knee range of motion

    To explore differences in range of motion (flexion and extension)

    Measured: Time Frame: preoperatively, 6-8 weeks and 12 months post-operatively

  6. Changes in pain medication

    To asses evolution of post-operative knee pain

    Measured: Time Frame: 1 week, 6-8 weeks and 3-6 months post-operatively

  7. arthroplasty related complications

    To count and asses all complications that may occur during surgery and in postoperative period

    Measured: Time Frame: 1 week post- operatively, 6-8 weeks post-operatively and 6-12 months post-operatively

  8. arthroplasty revision surgeries

    To count and asses the reason of all revision surgeries that may occur during postoperative period

    Measured: Time Frame: 1 week, 6-8 weeks and 12 months post-operatively

  9. walking abilities

    To asses "up and go" time

    Measured: Time Frame: 6-8 weeks and 12 months post-operatively

  10. Length of hospital stay

    To measure number of days counting from surgery to the discharge

    Measured: Time Frame: from baseline to discharge from hospital ranging averagely from 1 up to 7 days postoperatively

  11. Biomechanical 3D motion and emg walking outcomes

    Overground walking is measured using 3D Motion analysis and electromyography (EMG)

    Measured: Time Frame: at baseline, 6-8 weeks and 12 months post-operatively

  12. Radiological outcome on CT scans

    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)

    Measured: Time Frame: at baseline preoperatively and 6 weeks post- operatively

  13. 6- minute walking abilities

    to asses pace and model of 6-minute walk

    Measured: Time Frame: 6-8 weeks and 12 months post-operatively

  14. Biomechanical stair climbing outcomes

    Stair climbing and descending is measured using 3D Motion analysis and EMG

    Measured: Time Frame: at baseline, 6-8 weeks and 12 months post-operatively

  15. Biomechanical static balance outcomes

    Static balance is measured using a force plate

    Measured: Time Frame: at baseline, 6-8 weeks and 12 months post-operatively

  16. Biomechanical dynamic balance outcomes

    Dynamic balance is measured using a force plate and the modified Star Excursion Balance Test (mSEBT)

    Measured: Time Frame: at baseline, 6-8 weeks and 12 months post-operatively

  17. Leg muscle strength outcomes

    Leg muscle strength measured using maximal voluntary isometric contraction (MVIC) test of the hamstring and quadriceps muscles on both limbs.

    Measured: Time Frame: at baseline, 6-8 weeks and 12 months post-operatively

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted2 Nov 2020
  2. Study start1 Dec 2020
  3. Primary completion31 Dec 2021
  4. Study completion1 Aug 2022

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase N/A
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Masking
Quadruple blind
Who is masked
Participant, Care provider, Investigator, Outcomes assessor
Enrolment
200 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT04611815
Sponsor's protocol ID
WarsawMU/RATKA
Acronym
RATKA
Status last verified
Sep 2022
First submitted
26 Oct 2020
Last updated
15 Sep 2022
Results posted
No
Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
Undecided

Questions about this trial

What is this clinical trial studying?

A study testing Total knee arthroplasty, Computer tomography scan and biomechanical assesment in people with Osteo Arthritis Knee and Knee Arthritis, run by Medical University of Warsaw at 1 site in Poland.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 4 inclusion and 16 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 15 Sep 2022. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in Poland. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Changes in patients reported outcome measures - Oxford Knee Score (OKS) (time frame: At baseline (preoperatively), 6-8 weeks and 12 months postoperatively.). The study lists 6 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 15 Sep 2022.

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